I don't have much to compare it with, but I've noticed quite a bit of stability improvement since I installed my fork brace. Cross winds have a very reduced effect now. It's also quite a bit more stable in the twisties. For me, it was worth the money.
2012 DL1000 Adv
Heated grips, Sargent seat, 12v acc outlet, 6 circuit (Fuzeblock) add on, EB H4 light relay, Altrider crash bars & Skid plate, K&N filter, PWD Fork brace, mirror extenders, GPS shelf, Stebel Nautilus horn; Rear wheel spacer mod; Vibranators (keeps my hands awake! and yes they do work), Delkevic Exhaust, 16:43 gears;