OK, I own two of the three wheelsets you are looking at. So...
1) Zipps - priciest of the group, look great, great all around wheelset, and unlike the HEDs come with skewers.
2) DA 7850s - Also great wheelset. Haven't put as much time on them as the Zipps, but I have had great luck with DA wheels in general. My overall impression of these specific wheels has been favorable.
3) HED - Maybe the wheels are OK, but can't get past their lousy customer service. I've had several HED products including wheels. Maybe the ones you are looking at are OK, but the Alps I had were lousy.
I've got the correct two wheelsets of the three.
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