I know I'll take flak for suggesting a Turkish semi, but if stature is an issue, the Canuck Operator (Benelli M4 clone) has an adjustable stock that makes it ideal for smaller-framed shooters and it has been cycling everything I threw at it with almost perfect reliability, short of the first box of 25 Handicap Target loads of Challenger ammo that had ONE failure to eject. I went through 250 rounds of mixed low-to-high brass shells in one session and I could have kept going without much protest from my shoulder, but that was all I had brought with me and there was no time to go buy more.
The gas system is self-regulated and should take just about anything after a little break-in.
If the budget is there, obviously go for the original for peace of mind on long-term durability and warranty.