Well Windows 8 is certainly not a bad OS but honestly if you have 7 there is little reason to upgrade if the new Metro UI is a annoyance to you. >.< It has some nice under-the-hood changes which makes everything a bit snappier and there are some convenience things like being able to pause file-transfers and a few upgraded UI parts but in my opinion at this current point you will only like it if you like Metro^^

Here are a few things I pulled off with early mods