help me choose a motherboard

[Baharroth]

Hello

I've found all parts I want except the motherboard.. there are so many to choose from so I hope you can advise a few.

parts:

HD Radeon 7850
i5 2500k
Corsair Vengeance 8gb 1600 MHz
Corsair GS series 600w
WD Caviar Blue 500gb
NZXT Guardian 921

I know I should get Z77 chipset but which motherboard with this chipset? The cheaper the better ofc...
I got ps/2 connector (I hope I'm naming it correct but I guess you know what I mean) for both my mouse and keyboard (the green and purple slots) and I see a lot of motherboards that have only 1 slot so i can only plug in the keyboard or mouse... do motherboards still exist with 2 slots?

FYI I'm not going to use 2 GPU's soon

Thanks guys!!!

[yurano]

Recommended Z77 motherboards at ~130 include: ASUS P8Z77-V LK, Gigabyte UD3H Z77, Biostar TZ77MXE and ASRock Extreme 4.

[Deleted]

http://www.newegg.com/Product/Produc...130653&Tpk=z77 (sale board cheapest one , not sure on msi as mobo brand)
http://www.newegg.com/Product/Produc...82E16813128545 (one of the best boards atm with still a pretty good pricetag considering all the options it contains for the future)