Site with good HU?

I currently play Stars but they only offer tournament heads up matches. Is there any site that offers cash game heads up matches other than UB and Noble? Noble seems very soft but the rake is tremendous at the low limits heads up (2-4 or 3-6) and I would think a HU match would be tough to get on UB, and if you do get one, its probably against a fairly tough opponent.

[aargh57]

Prima offers them.