When you get a chance Chris, did you get a chance to check out the RG2228 or the S7320? Thoughts? I think we probably have alot of the same issues with trems - I'm curious about the ZR tremelos myself. Reading up on them, sounds like it could have some cool features:
A "tremsetter" or "backstop-like" device to provide counter pressure, to allow a return to "zero" (neutral) in case of string breakage. Should a G, B, or high E string break, the guitar will stay close enough in tune to allow the player to finish the song before having to replace the string. The ZR (Zero Resistance) tremolo uses roller bearings to eliminate the inherent friction of the knife edge tremolo designthe ZR actually has the "frictionless" feel of a standard tremolo. The roller bearings provide a much smoother feel and a more accurate return to pitch. Consistent return to the zero point (center point) after arm use; guitar remains in tune. String replacement is much quicker than a standard tremolo. Tremolo will not move during "double stopping" (a major complaint of locking trem users)., etc. I was surprised to read that this is another Korean produced guitar as opposed to Japan made.
Bet the Engl booth was cool too!