Davies is 31 (32 in a month or so), he's absolutely slap bang in his prime as a GK. Of all the names mentioned in this thread, he's the one I'd take back if possible. He may have looked rusty in games recently, but that's probably because he was just that due to lack of games. Get him in, get him playing, he's a better GK than Isted or Roberts.
Because as we well know at Barnsley, 7 games is a reasonable number in which to make a judgement on a player!