Two that you haven't mentioned:
Edirol UA-25EX USB works with Win7 but has some annoying latency problems, even @ 512
Infrasonic Quartet is on my systen (see below) a huge step ahead in latency (still testing...now @ 64 with Absynth, Sytrus, Iris and Ogun) and has a very clear interface.
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Win7-64bit | i7@3,4Ghz - 8GBRam - ssd | Infrasonic Quartet | ZeroSLMkII - Nanopad | Axiom61 - PriviaPX3S | PRS & Takamine | a few vsti
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