I saw one of my friends play live last night. The dude plays a pretty good rhythm guitar, his vocals are actually really **** good, but oh my, both he and the bassist were out of tune and it was just so distracting that they sounded needlessly bad. It could have been prevented with a pedal tuner they used between songs, hell, I'll take a Snark, or anything.
So yeah, how do you suggest to a good friend that they buy some MFing tuners?
(That should be a rule, btw. If you don't have a tuner, you can't be on stage.)