Orient is one of the best! Loads of decent boozers within striking distance too, Anything that close to central is worth the effort.
Crawley is easy but too far out. The town is miserable as well. Used to work in Horsham, which is lovely but very Tory, and occasionally went to Crawley. The only reason to go there is it's a ground we've never been to before.
Salford is easy but dreary. Oldham would be a great atmosphere and we'd take loads but the town itself isn't one to get excited about. See also Walsall.