I am wrestling with the same decision.
My concern with the MT/Rs is mud performance. The reviews are inconclusive, either people say they're good or not good and pack up. But good in rocks.
STT seems to get good reviews for mud, okay for grip on rocks.
Mine:2003 TJ Rubicon Flame red, 5 speed, 4.88 gears, rear Detriot locker, RE 3.5" SF, 1" BL, 1" ML, MT/Rs 35" x 12.5 on Soft 8s, PSC Rocker Knockers, Warn 8274, Warn 620 flood lights, GP Fab rear bumper / tire carrier, MCE 4.5" fenders
Hers:2009 Wrangler X six speed soft top, one option = AC, Rubicon Tires and wheels