I literally ordered this thing last friday, it should be here by the end of the week- I'll let you guys know.
I bought it because honestly, the TRI-X cooler is on of the best performing coolers out there. I did not go with powercolor because I don't have any experience with them where as sapphire i do.
So buy a much slower card? I think you must have meant a 780 because that is closer in performance to a 290. However the 780 is still slower and more expensive.
I don't know what experiences you've had with PC, but I've been buying from them for a while, and I've been just fine. Heck, for my newest upgrade, I went with Visiontek.