Hi here we go again, last upgrade fell through but hopefully this one wont, I am moving from AMD system 
NZXT Lexa S 
Gigabyte 890GPA-UD3H (rev 2.0) motherboard 
AMD Phenom II X4 965 Black Edition, Deneb Core, S AM3, 3.8GHz 
8gb Crucial Ballistic DDR3 1333mhz/PC3-10600 (7-7-7-24) 1.65v 
XFX HD 6970 ATI - AMD Radeon Graphics Card - 2GB
Western Digital WD6402AAEX 640GB Hard Drive SATA111 7200rpm 64MB Cache-OEM Caviar Black. 
WD 250GB 3.5" SATA 6Gb/s Caviar Blue Hard Drive - 7200RPM 16MB Cache
Corsair 750 PSU 
Coolermaster Hyper 212 Plus 
Liteon DVD Writer 
24” Samsung SM2433BW Black Widescreen LCD, 1920x1200 
5.1 Creative Surround Speakers 
Logitech G11 Gaming Keyboard 
Logitech MX516 Gaming Mouse 
Windows 7 Home Premium 64bit 
Epson DX8400 All in one.
The choices of mobo are :-  Gigabyte GA-Z77X-UD5H Socket 1155 VGA DVI HDMI DisplayPort 7.1 Channel Audio ATX Motherboard  or Gigabyte G1-Sniper M3 Z77 Socket 1155 VGA DVI HDMI DisplayPort 8 Channel Audio mATX Motherboard  I know what one i fancy but would appreciate any help in final decision, the processor i am hoping to get is the Intel Core i5 3570K 3.4GHz Socket 1155 6MB Cache Retail Boxed Processor