The proline strg set wasn't that good - the arms became too flexible as they got a little run time on them and they require dremel work to fit a emaxx chassis. I wanted anything that was alum and would let me use brgs so this is what I used - I have two sets of these in two diff Tmaxxes and they been solid and caused no trouble. Way cheaper than a gen iv, but does require a separate saver which is the downside.
http://www3.towerhobbies.com/cgi-bin...&I=LXUL71&P=ML
This just duplicates the stock parts in alum.