This deal seems almost too good to pass up:
It's 20% off, and nobody else is selling it for any less than £95.
Some background: I previously had a Palit (ugh) GTX 460 SE, which seems to have been taken out by a failing PSU, a few months out of the warranty that I can't find and probably wouldn't want to redeem anyway because I would just get another 460 SE.
The 7790 is a step up, but it's not as good as the 7850 (about £30 more) or even the GTX 650 Ti Boost (but that seems absurdly large and I worry it wouldn't even fit in the case - there's about 37cm available from what I can see).
Is it worth going for the deal, waiting for something better, or doing something else?