I would probably get them in 8 speed, as tempting as the price is. With an 8 speed brifter, the gear spacing is the same as 6 or 7 speed, so it's actually a 6, 7, and 8 speed shifter. Just don't use those extra clicks on the shifter, and have the ability to run 8 speed at some future date if you decide to upgrade.

I just received some of the 8 speed ones for around $72 with 3 day delivery. Have not installed them yet, but they seem simple enough, and I have heard almost zero complaints about them. In shopping for these, I noticed Shimano brifters have gotten a little cheaper than they used to be.