i tried some LTDs, pretty good guitars, but they have that crappy TRS-like trem... i once set up a friend's LTD MH-301 and the trem was bent left to right! it couldn't even keep in tune without using the arm!
while the bad thing about the RGT is that it has those crappy INF pickups.
you can always get the LTD and put an Edge trem on it, for about $100 (not 100% sure about any good results, anyway).
or you can get the RGT and put a good pickup at the bridge at least, for about $50-60 (100% sure about good results).
up to you.