Guinness in a gear shop? Nooooooooo, that is a recipe for buying kit needlessly!
Pinnacle gets my vote, although I can't really slag off Snowdonia Cafe, it's just as good. Pete's eats is over rated, the service is poor and the food, well after waiting 1/2 hour for a re-heated sausage sandwich, taking it back only to get another one equally as crap, I can safely say, I won't eat there again!
The best thing about the Snowy, is that it opens at 7.30 in the morning, perfect when you have forgot to bring milk and you are in need of a brew;-)