Yeah, I recall that thread about rebuilding the stock units. Rebuilding suspension components is best left to the experienced though. I was just talking with my Dad yesterday about a guy he knows that is now blind in one eye from getting nailed in the forehead by a part that flew out of a shock he was trying to rebuild... that wasn't rebuildable. In any case, you can link to some online retailers from Bilstein's website. I found the Fox units at one of the off-road places listed there. Pretty comparable to the Bilstein units, but I'm more familiar with them than Fox. I have an old Yamaha DT400 with a DeCarbon mono-shock I bounce around from time-to-time, but my cycle passions are with my roadracing past. Kawasaki GPz Uni-Link baby!
On the VX figure $175 for each corner to get a true performance, remote resevoir, rebuildable gas shock. That's $700 or about the price of two OEM shocks. Now figure an average of $25 each for rebuilds for a total of $100. Being better quality shocks up front may mean a bit more mileage, but either way you're looking at a max of $100 each time you'd need to do anything. That sure beats buying cheap OR expensive shock each time they wear out, plus you've got something really snazzy tucked up in the wells you know you can count (and bank) on.
Plain, simple, truth.