The only thing stopping me jumping on a 970 is the ~£230 780. At my Surround resolution both cards will perform basically the same with a similar % OC yet the 780 is quite a bit cheaper. The 290 doesn't even get a look in for me due to the Eyefinity issues I have had in the past.
Very tempted by a 970 all things considered though.
Very tempted by a 970 all things considered though.