On that note:
I've been in the electrical equipment industry since 1990, and hold a patent for a high-end surge protective device design. Pardon the long post, but there's a lot of pure garbage that gets stated about "power conditioners" and surge suppressors, and I think it's helpful to get down to the core facts of what they can and cannot do.
A "power conditioner" doesn't really protect your equipment in any way. The majority of them are no more than a 60 Hz filter, with perhaps a bit of surge protection. Unless you are dealing with a noise issue from another ill-behaving load on the same circuit (like a neon sign or failing refrigerator/fluorescent light ballast) , they really are just electronic jewelry. Surge protectors, however, can provide real value in preventing transient over-Voltage events from damaging your gear or shortening its life.
There are two key performance factors that tell you how a SPD (Surge Protective Device) will operate in the real world, and a third that will give you a sense of how long it will live. The first two are the clamping Voltage, i.e., what is the highest Voltage that the SPD will let through to your equipment when it attempts to clamp a surge event. The second is the Peak kA rating, which determines how much transient energy the SPD can absorb without failing to clamp. These are required test values for any SPD that meets the UL SPD standard (1449, 4th edition). Peak current is sometimes called Nominal Discharge Current, and clamping Voltage is sometimes referred to as VPR (Voltage Performance Rating).
The third value is the total amount of energy that the device can absorb before its useful life is over. Most SPD are based on MOVs, which are sacrificial devices that lose some capacity every time they absorb a transient. A higher "Joule rating" indicates the total amount of energy that the device can take, which gives an indication of how long it will last in normal use. Be careful, though, as a high Joule rating means nothing if the device doesn't have a high enough Peak kA or low enough clamping Voltage rating to protect your equipment.
I like the fact that both Furman and TrippLite give clear, honest ratings information for their devices. It allows you to really compare what they do. The trouble is that many other manufacturers do not, so it can be difficult to get a really solid, fair comparison.
So, have a look at this product: https://www.furmanpower.com/product/15a-merit-series-power-conditioner-wlights-M-8LX
Look at the spec page, and go down to the bottom, where it shows the peak impulse current, rated at 12,000 Amps. This is actually a pretty reasonable rating compared to most inexpensive "surge strips", as it is double the 6kA that is required for the VPR testing under UL1449. It's limited to 150 Joules so it's not a long-life device, but it will take a reasonable hit before it lets anything through to your gear. The real problem, though, is that the only protection modes are line-to-neutral. A transient that is line-to-ground would not be clamped inside the device, and would force surge current to travel through the neutral-to-ground bonding link either in your equipment or in the service panel. Not a common occurrence, but not a good outcome.
Now, compare to this product: https://www.furmanpower.com/product/20a-advanced-power-conditioner-wsmp-no-lights-9-outlets-1ru-10ft-cord-P-8 PRO C
Note that it doesn't use MOVs, so there is no Joule rating - it should absorb surges throughout its useful life. Trouble is, its initial clamping value is only 3,000 A, and it's max is 6.5 kA - roughly half of the other device. It's about tradeoffs, and the trade-off here is that a relatively moderate transient event would pass through this device and get to your gear.
Now, what would I recommend? Something more like this: https://www.tripplite.com/isobar-12-outlet-rack-mount-surge-protector-15-ft-cord-3840-joules-locking-switch-cover~ISOBAR12ULTRA
Have a look at the spec sheet. Clamping Voltage of 140VRMS. Peak current of 96 kA, which is more than a standard 120/240 VAC panelboard can handle. Joule capacity of 3840. UL1449 approved. Note that it also include Line-to-Ground and Neutral-to-Ground protection modes, as well. This is a serious SPD that actually does the job, and will keep doing it for a long time.
There's a lot of snake oil in this part of the electrical industry, along with some reasonably good products that are just over-priced for what they deliver. The key to not getting ripped off is to understand the specs and use them to understand what the various products will really do.
Full disclosure - I used to run the engineering team for a company that made SPDs (not one of the ones I have mentioned here). I've moved on to another part of the industry, so there's no conflict of interest with this post.
Finally, as Phil noted above, your power cables should be as short and as thick as you can get them. I won't let anything smaller than 14 gauge anywhere in my gear, and I prefer 12 gauge. As a comparison, the NEC (electrical code) won't let you wire any 120VAC service in any house or commercial building with anything less than 14 gauge wire, and higher gauges are required for long runs (to meet Voltage drop requirements). 12 gauge is required for 20 Amp circuits.
Hope this helps....