GHK and MWS out perform the vipertech ootb.
VT is perfect in terms of externals and internals though.
WE as stated for budget, GHK / MWS for higher budget.. MWS seems to be more expensive, but the mags from asia are almost 1/2 the cost of the GHK.
Personally, I've been through VT/GHK/WE.. think I would try a MWS this time around
