I've always read that the brakes for the VX were actually over-kill, being designed for the Trooper at almost another 1k in weight. A two piston design would be better, but that wasn't much of an option back when the VX was designed and built (both in availabilty and cost). I have the braided lines and it does help - I know when Joe Black drove it he was very surprised at how responsive they were compared to both his 99 Ironman and his 01 Dragon. I also have slotted and cross-drilled discs - not recommended for you off-roaders but for street driving they seem to work well with the standard pads.
As with any vehicle, a lot just depends on the vehicle itself - lots of variation to the VX in all aspects (look at the oil consumption poll).
-- John