Note that usually people will post only when they find a problem, not when they are satisfied with a feature. So these threads you read here are not exactly a representation of P7's quality (or lack thereof) If anything the fact that since the release and thousands of people getting P7, there have only been a few threads about bugs (not all of which turned out to be actual bugs,) should be an encouraging sign for you.

If there were lots of major issues the board would be in flames by now.

Also, new versions of anything always have bugs, that can't be helped. As long as they fix them in service releases, it's all  good.