Reina is worth a couple of howlers a season but he's also worth 2 or three assists a season too. His record at Liverpool is pretty damn good and it's one position that has never really concerned me since he arrived.
That's my point though, he's just grand, not a Cesar or a Buffon. Agreed that Reina looks mentally strong in getting over mistakes, but he doesn't seem to instill much confidence in his back four. Cech before the knee in the head was a different player, there's no comparison now I agree, but in his first season at Chelsea he was amazing.