Hey guys! Just joined the group, i know, I'm a little late lol.
But, I have the lefty KC signature Jaguar, lefty KC signature Mustang(sonic blue) and a custom 1 of 1 build of a lefty Jag-Stang from the off-set guitar forums(so the prototype mods/body/pickups/ect). My go to is the Jag. I know it's very heavy, compared to the other 2, but it's very versatile and can make a lot of different type of sounds. The one thing i don't like about the KC jag is the neck radius isn't 7.25". I really do like the thinner necks of of the mustang and jag-stang(and hi fliers).
For me, I just like the way it "sits/hangs" when i'm standing up playing it. It stays in tune better than my mustang, and I really like the body astheticallhy vs the mustang or Jag-stang, although my "prototype" jag-stang is very close. The production line jag-stangs are not well built and the electronics/pickups are shit. The neck is very good, though. Smooth and thin, like a hi-flier or mustang.
just my 2 cents.