The IRO Cycles shop is back up again and their wheels are top notch. Unbadged Velocity Fusion rims* laced 3x to rebranded Fusion high-flange hubs. I've been beating the snot out of a pair on my monstercross bike all season, as well as a second pair on my commuter. No problems with either pair; the CX pair was built by IRO, the commuter pair built by me.

Remember - if a description doesn't say flip-flop, you can always run a freewheel on a fixed thread without problems, but not the other way around.

*To the best of my knowledge, IRO Cold Fusion rims are unbadged Velocity Fusions. Other people have said they are a comparable model of Kinlin rim. Either way, they're decent rims that hold up well to abuse.