I have 5 MT3 sets and I love how they feel, but Jukebox is the one I use least because I find it harder to get it to match with most boards. They look amazing on my red keyboard, but not much else. So if they are on sale, grab them, but I don't see it worth paying the full $120 for. Still, if you have a board that goes well with it by all means go for it, MT3 is really nice to type on.
The Jukebox is a great way to get into the mechanical keycap scene. The colors pop and the red lettering stands out from the sea of black lettering/symbols that is the standard. The beige-ish caps have more of a brown tint than a retro grey tint that I was expecting. The green really pops in-person.
If you get multiple MT3 sets, this set definitely adds some fun colors :)