I have never owned a Juno; only fooled around with a couple that belonged to someone else. I have owned a JX-8P since about 1984 -- the model with the patch names printed on the buttons.
Maybe it's just the familiarity, but I prefer the sound of the JX-8P. The strings and other pad sounds just have their own unique character, as do the "synthy" patches, and the piano sounds are pretty decent, as long as you don't expect them to replace a real piano.
I still use mine occasionally when recording, although the PG-8X VSTi emulation is so good that I often use that nowadays, rather than d