Thanks Soar. It's been running perfect so far.
It'd be a shame not to use the H70, but I know I couldn't do it unless I had 100% confidence it wasn't gonna leak again, costly risk. If you're mainly concerned with the sound, I was very surprised the Hyper 212+ was not louder than it was. My antec 900 case isn't a quiet case by any means, but the 212+ fan isn't any louder than my case fans (set to medium speed). My previous cooler was a Freezer Pro 7 (for my E2180 @ 3.0ghz), and I could hear that fan over my case fans of the 900. With the Hyper's high RPM fan, I think it will perform adequately with a decrease in speed if you needed to make it more quiet. Also, I've read that some people are upgrading the hyper fan with a differenent two fan set-up running slower rpm, with better cooling, and even quieter. Down the road I'd like to do this, but for now I'm very happy with the system noise level, including the 6870....
Note the 212+ installation could be easier, mostly due to a lack of detailed instructions, but it's not difficult.