HTPC case for medium gameing build

[theDoItYourselfAmeture]

So I go back and forth between my father and mother's house a lot and both give me the evil eye when I try to bring my mid tower with all the cables and the keyboard and mouse, so I am going to buy a case (and gtx 650ti boost) for hauling back and forth inside a suitcase (if possible) and I want some advice on the case options.

parts I have already
i7 2600k (no overclocking, found on sale)
DH61BF motherboard
4gb 1333 ram
gtx 610 2gb
300w psu (came with case)

http://www.newegg.com/Product/Product.aspx?Item=N82E16811353017 biggest but has usb 3.0 (current mobo isn't compatible) but is cheapest and has one 2.1 usb

http://www.newegg.com/Product/Product.aspx?Item=N82E16811144230 has built in psu (kinda iffy on the psu but it can save $50) and no 3.0

http://www.newegg.com/Product/Product.aspx?Item=N82E16811204030 smallest of the three but most expensive and has least number of fans.

will buy new psu if I have to, also I have a micro atx motherboard with oem windows so itx lan builds are out.

 

[John Sebastian]

buy a psu does not come with the case,because all psu comes with the case is not good,for only $50 you can buy quality psu with a lot of safety protections like corsair vs series or evga 500b

 

[theDoItYourselfAmeture]

How about instead of putting the case in a suitcase, you just get a case with a carrying handle (link)?

And if you are willing to upgrade the motherboard to a mini-ITX this is one of my favorites.

I normally wouldn't mind getting another motherboard, but I used a oem copy of windows 7 so I don't really want to drop another $90 on the os plus $80 for a new motherboard, Also since my parents could start WWIII just by looking at each other sometimes I ride the bus, so I kinda want to put it in a suitcase.