Frankly, I love Planescape (lore, characters, factions, everything) far too much not to say I prefer 2E, but I've spent more time playing 3.x becqause that's kind of the 'settling' ground for both young and older gamers.
That and I love Pathfinder. The artwork and the worldbuilding is just wunderbar.
I tried playing 4E and immediately hated it. It felt like there was zero possibility for 'rule of cool'.
Sure 3.x had needless garbage getting in the way, but if you wanted a catfolk ranger/fighter/barbarian (Spirit Lion)/Dervish build with Shi'Quos School and Battle Jump in a 4 player party that is comprised of no less a druid, wizard and cleric ... the DM might toss you a bone given the relative disparate power difference.
Getting 3 full attacks plus a freebie enemy on enemy hit through deceptive dodge through 'Up the Wall', slippers of Battle Dancing, 65' move speed, auto-proning enemey targets in a single round is pretty fucking awesome.
18+1 attacks at level 17. Much hilarity. Only could pull that off once a fight and only if I was pre-flying or there was stuff I could jump off nearby wiuth larger enemies. Feycraft scimitars ftw, deadly defence, weapon capsules, and improved crit (15-20, x2) ... so I could hold my own at least compared to the full casting, swift wildshape cheesing other PCs.
On the flip side, I had ridiculous good saves due to class scumming a whole lot of basics and PrCs, and my touch AC was fucking ridiculous. AC tanks ftw in 3.x ... So sure, I couldn't reliably blast as well as any other PC, but with my ring of evasion, and just my saves and AC alone I was untouchable and that's a pretty awesome feeling right there.