I'm not a big slipjoint fan, but the Roughrider knives I've handled have all been pretty good quality. As far as I know, they make Buck and CRKT's Chinese slipjoint lines.
I don't have any made by Tekut, but they have some similar looking knives in their Fashion Series. Check out the last 8 knives on this page: http://www.tekut.cn/en/fashion/
Colt makes some excellent examples. I picked up a Colt SIG 6 Stockman Black Stag from ebay and am quite impressed with the quality. Its on par with SRM but with a much nicer polished finish.
I should buy some of those knives and start calling myself Iron Chef. Seriously, they seem to make good knives.
Update: Just won a RR green gunstock stockman on Ebay for $8.49 shipped, will post comments once delivered. In the meanwhile, here's a video review of the brand in general.
PS. You guys need to stop posting these deals, you'll drive a man to ruin...
On top is a toothpick from the ArrowHead line, designed by Brian Yellowhorse - $12 shipped. Below is a stockman with green gunstock-checkered bone scales - $8.49 shipped. Can't find much to complain about; they are very well constructed, tightly-fitted knives.