I don't get how any one person having driver issues is in any way indicative of overall driver issues for a particular vendor...
If anyone felt like posting otherwise I suspect you could find a huge number of individuals with SLI issues.
Guess what, in almost every single occasion you'd find some user specific issue was behind the problem...
It terminally doesn't matter that you think you've managed the issue perfectly and it's 'dreadful' that hardware/software vendor X forgot your particular amazing and entirely unique install and usage profile
So how does it usually work?
Are there thousands and thousands of people (well, that's what it would take to get a statistically significant sample, and then some) reporting this issue?
Uhhhh, no.
Well, gee, I've managed to find three people on teh intarwebs who have the same issue.
Therefore, it must be that all company X drivers are bollocks and that everyone who uses them will have huge issues
Or alternatively: it's just possible that some of the hundreds of pieces of software I have installed/my os has installed are conflicting in some way that the driver team for company X had not considered.
Which seems more likely? I think that anyone who isn't a giant douche can probably answer that question as follows:
Both vendors' drivers are not perfect, and people sometimes have issues, particularly with multi-GPU setups. The vast majority of people don't (common sense and some pretty basic maths indicates that if everyone who installed a forceware or catalyst driver experienced epic ass-failure you may, just slightly, hear about it).