I say it pretty much every time we play but once a game he will make a terrible mistake that could cost a goal. He gets away with it more often than not, last night he didn't. As others have mentioned, Cardiff's third was baaad, and he should have done better with the Bristol City goal. I thought the second Rotherham one was savable too but haven't seen a convincing angle. That said, he has made more 'good' saves this season than he used to. The QPR save and one at Rotherham especially were very good saves.
The bigger issue for me isn't the bad mistakes like last night, it's the fact he never comes off his line to claim a cross and his distribution is terrible. It means the centre backs have to win may more duels than they would do with a competent keeper. We have many issues across the park and he isn't culpable for it all by any stretch, but we need better. I have no idea if Collins is that, I haven't seen him play, but it's frankly worrying if we have spent £800k on a keeper who isn't better than Wilson.