I flop back and forth. NGL, indy are chunky/hefty to me, but the swerve-yness (like ACE) is very nice (look at Tfunk when he's setting up for tricks), thunder nice and light but wheelbitey...I'm odd in that I don't worry about 'popfeel' I just adjust...takes less than hour ollieing over shit (I have big ollies so it's bash the tail and hope for the best with any truck).
For now, it's Indy since I'm on 54mm wheels and skate loose...that's a deathknell on Thunders for me.