A lot of my favorite games are the old 4-ways and I use the T-Stik Plus with bat handle. I know there's been some criticism by people who I respect, but I've never once moved in the wrong direction in any of the maze games (Pac-Man, etc). And it's not like I'm not picky. The whole reason I discovered this site was because I was sick of dying in the Pac-Man/Donkey Kongs of the world because of moving in the wrong direction at the worst time. So I started looking at some of the commercial arcade sticks... and eventually my looking led me to BYOA where I couldn't believe what I'd seen.
I've also never had any personal problems with the spring tension. I know it's a common complaint, but I think this is one that definetly varies with the individual. I've never had my hands get fatigued from them (But I'm sure miles may vary with each individual). Also never play fighters, so that's not an issue.
That said, If I can ever get my hands on some nice Wico 8-ways, I'm gonna replace my T-Sticks with them. Space is an issue, however, so I'm still keeping 1 T-Stick for use as my 4-way (And 8-Way microswitch for games I don't wanna use the Wicos).
Edit: I respect what 1UP says about the J-Stick and it may be the better solution for you (Assuming you have easy access to switch them.) But personally, there is something to be said for short throws in shooters. I love the fact I can quickly change directions in some games.