The most reliable z68 boards are from ASUS and MSI.
How about Gigabyte? I was considering the GA-Z68XP-UD3P for a SB build later in the year (I'll need FireWire for my interface). It's got the "3XS Approved" label on it on the Scan website, as do a number of other Gigabyte boards. I can't see any MSIs with that accolade though.
I'm not sure that there's much of a benefit in getting the 2700K over the 2600K either. Granted that the price different isn't that much, but they've both got the same overclocking potential, so the performance difference will be negligable at best.