I bought some last season and liked them. Caught mostly perch, crappie and gills with them. A few trout too, but I noticed how many bites I missed with trout and bigger fish. I'm not sure if it was me or what but I want to get some of the XLs as the bigger gap is said to remedy some of that.
Custom Jigs and Spins makes jigs that are similar and I think they're not nearly as expensive. I have yet to find a Custom Jigs and Spins product I don't like. But, on the flip side, Clam is a known commodity and you get what you pay for too.