If you can find a Winchester, they're well worth it. No jamming, feeds very fast for a gravity-fed hopper. I carry 50 rd. pods onto the field with me, more so that I don't have to go back to the staging area as often than any other reason. 50 rds. is enough for all but extremely lengthy woodsball games. The best part is that it makes your gun feel like there's no hopper at all = very fast snapshooting.
I have a Sportshot, but it jams when I shoot fast, and I don't even have an A/T. Might as well use a Revvy at that point...