Not exactly your requested comparison, but I just installed Teraflex's FOx resis, replacing the 5100s that have been on there a couple of years. The Fox's are a significant upgrade, much better tuned to the suspension and the amount of unsprung weight I have. Not to trash the 5100s, if you're running a modest tire size & non-bead wheel they're great. They just have their limits.
'09 JKRU. 4" Teraflex long arm, Teraflex R44 housing, Teraflex / Fox Resis, Poly Performance skids, Nemesis Billy Rockers, Nemesis flares, 37" ATZ P3s on 17" 5x5.5" Trailready HDs, Spyntec hubs, Teraflex BBK, Mopar BBK master/booster, Superior front & Alloy USA rear axle shafts, CTMs, Reids, Synergy drag link & tie rod, WTOR hydro-boosted steering, 5.38s, TF Dual Rate front bar, TF bumpers, Warn Powerplant, Tom Woods shafts, AA xfer case cable, Kilby canister relo, RH4x4 cage.