You're opening up a can of worms with that one.
Those of us that have been around the houses will mostly tell you that NV tops it for plug and play - game on attitude.
AMDs offerings offer the performance to match, but it's only been in the last couple of years they've caught up considerably. A lot of the driver rubbishing comes from past tense with Crossfire / Power Play and general Catalyst A.I bugs that were a pest, most of which are now resolved on Hawaii.
Both are fairly evenly matched these days to summarise, but NV still have the upper hand when it comes good well rounded consumerism out of the box. If this wasn't the case, then I'm sure the difference in price over the years would have settled itself.
This is not a slight against your post at all, just a viewpoint from someone who jumps in and out of PC tech every 12/24 months. I could have logged on a year, 2, 3, 4 or more years ago and read the exact same thing. I'm not sure whether this is just a perception problem, but the view that Nvidia have the more polished product yet AMD have pretty much caught up with the most recent offerings feels as old as the hills! It's like they never quite get there.
FWIW I've never had a disproportionate amount of problems with either, but it's funny logging back on here with year gaps and reading the same thing.