MonkeySee...
Luckily, I'm not brand specific in anything. Ford, GM, Dodge, improrts? Luckily, I drive different brands and realize that each have their pros/cons. Same with computers. Windows has some great features and Mac has some great features as well.
As a suggestion, make a columized list of different tasks (that you do with a computer tool). For example, Photos - display and editing, Movies - display and editing, Music - play and edit, CD burning, DVD burning, DVD to File Converting, watching Movies, Downloading movies, Print, Word Processing, Spreadsheets, Presenations, Email, Web Caming, "ease of reading", etc. etc. Within this page, make MAC, Windows and "comments" columns, For each matrix, apply a 1-10 score. 10 Being the highest. Now... Perform your own review - for what you do with a computer. When completed, overlay that with cost. My current iMac costs 3 x more (yes, 3 times more after taxes) compared to my current Windows system. For what I do (re: mostly internet surfing, internet forums and email), I find my Windows "entertainment class" machine much better then our new iMac - from a grand total column comparison score. For photos and iTunes, our new iMac blows our Windows machine out of the water. But for other things, our Windows machine is much better.
Like a glove, one size doesn't fit all. And, Windows or iMac does NOT "fit all" either. It all depends on the specific tasks the "tool" (computer or vehicle) is used for....
Good luck on your new iMac. Like many, I also hope that Apple Corp fixes "more feature gaps" with their future Mac OS releases. Especially since their systems cost 3 times more then a Windows machine. To me, Apple should make their iMac 3 times "better" - which I know they can... .