definitely use the PUSH option
I've got a PUSH'd shock on my Enduro, and have recommended several other Enduro owners to do the same. The PUSH internals make the iTch Switch as unneccessary as the lockout; we all climb the uphill switchies with the shocks set at the "long travel" option, and they work great. In addition to the usual performance upgrades- better seals, custom "platform" designed for your weight, your bike, and you riding style, now it'll have their new-for-2005 internal modifications, These are damping changes designed for the new RP3, but they'll work in your old 2003 shock (or earlier) as well! For me, PUSH has made all the difference for my bike, and I unhesitatingly recommend it to anyone, especially if you're on an Enduro. If it was possible to spend $150 on a new Romic, RP3, 5th E, or Swinger, that'd be great. But, you can't, and the PUSH mod certainly works as well as any of these options, if not better.
http://www,pushindustries.com