You are one of those people who insisted Vista was good weren't you?
It wasn't. It was an attempt by MS to bring in some good ideas, but they ended up making it so clunky that it failed. It still is not liked. I had to do some software updates at a Client site the other day on 3 computers, one = Windows 8, one Windows 7 and one on Vista...Guess which one lagged behind? (I'll give you a clue, no number in it's name- and for the record, the specs were not all that bad).
Windows 8 does not suffer from this speed issue (much better OS than Vista was), but I can't like the Start screen, I don't like how my desktop disappears when I press the windows key. I like to have the document or web page on the screen when I search for my programs (as it's a clue what it was I was about to search for).
Install Start8 on Windows 8 and it's fine. MS should actually bring back the option for the customer to choose what they like, not try to force some new way of doing things down the throats of all customers whether they like it (which Glaucus, kitch9 and gareth obviously do, fair enough) or not.
I also like Gadgets (sure I know there's a security flaw, but only with certain apps), which I have to tweak Windows 8 to use.