I really like the Troy chassis a lot. My only complaint is that there is some wiggle room between the chassis and receiver (least there was for me). But this is solved by bedding the receiver in the frame. Makes take down for cleaning a little bit of a pain, but the rifle will be more accurate for sure.
Had the Marauder for a while, and a FabSport 556, but the Troy is very nice. The standard SR-22 (Nordic Kit), does mount better to the receiver, but also is heavier.