FWIW, I've played (incidentally) 12 stringers for decades. I've
always wanted one but
never owned one for one simple reason: action/feel. Wide, thickish necks, action requiring gorilla grip at higher frets, many of old required tuning 1/2 step down, and also built heavy. Could never get myself to love one beyond an hour to "convince" me to get one. And yes, throw in the much-beloved Guilds. Gone through a bunch and I loved the
idea of owning a 12 more than the actuality of it.
Enter Taylor. Wow. All those obstacles thrown out the window; Taylor absolved it all for me. No hyperbole. I bought a gorgeous 655ce from a forumite and that was my keeper guitar. Played easy at concert pitch, sounded gorgeous with superb note definition, and the jumbo body did not at all impede with playing one iota nor ever feel bulky (I'm not a big guy either). Just a great 12er that sold me! I eventually tried a 3-series 12 and found the same superb action/feel: yep, Taylor simply got the 12-string formula right ...dead-on, for me.
And I'd have kept the 655 forever were it not for a certain RTaylor that crossed my path. Style 1 GS body, 12 strings resonating in the most figured flamed maple you could imagine, and a bottom end that was bigger and deeper than any 12 I've ever played. All the attributes of a quality Taylor 12, with extra bottom and depth, lighter weight, and crazy-beautiful aesthetics. Um ...I had to have it.

So there you go. You wanted a Taylor-12 opinion, and you got my unvarnished love fest. But if I may say, I am pretty good at being critical and objective, and am not bowled over by any pretty faces. Function definitely trumps all in my book, and no "pretty guitars" or gear
ever stays in my possession if it can't deliver the goods. And if I were to recommend a 12, not only would it be a Taylor, it would be in GS body as I feel it offers all the attributes of a Jumbo bod with greater comfort and "familiarity" in feel ...IMHO of course. Hope that helps you a bit.
Edward