Re: Core i5 build for under 600. Suggestions?
The second Mobo is MATX. If that's what you want then yes it's fine.
Personally, I don't care for wither of the cases but I'm not the one who has work in or live it. I do not like doors or windows on cases primarily because the doors are easily broken and the windows look like crap in a short time.
All PC's are not the same. Posting your PC specs will help us to help you quicker and more efficiently.