As for a good mid tower:http://www.amazon.com/Corsair-Carbide-Windowed-Computer-CC-9011017-WW/dp/B008B6ONXA/ref=sr_1_7?ie=UTF8&qid=1407258610&sr=8-7&keywords=mid+tower
What it all comes down to is preference. If you like the extra space in a full tower, go for that. If you like to have an SFF gaming chassis than go for that. If you want a mid-tower rig more power to you. Just find a case look at the specs and if it has everything you need, go for it.
NZXT makes quality cases. I have had mine for about 6 years now and it has seen quite a few components and it's as good as new rock solid cases.
I have a 32 bit version of Home Premium that came with an inexpensive ( $329.00 ) Dell laptop so their out there. Still anyone that builds a computer already knows all the facts about the ram usage. As far as the different flavors of Windows, most of the extras are things you can live without anyway. Now how much market share does Apple have with PC's? Oh yea I guess you can fool some of the people some of the time.
Yea the pc is the only way to roll if your a gamer. Apple prices for graphics cards are stupid. Now Garage Band is a different story.
Just wanted to say hi and let everyone know I exist, I think I do anyway. A guy named RAID turned me onto this site if any of you know him. Anyway Hi.