Full compass seems to have the best prices around... and I get cheaper prices when I call, vs. the web. And for schoeps stuff, Jerry at Posthorn. He is one of the few dealers that actually stocks more obscure (and critical!) Schoeps parts, so I like to support that.
I think the windtech's are low quality. The foam on the pair I bought was very closed, compounding the fact that the design does not leave any air around the capsule.
I'd try and find a good pair of used windscreens.