is the 3300 much better than the 3200 ($50 better?)
EDIT: it's only the 790gx that has the integrated graphics, and that's near twice the price
looks like it's between the Asustek M3A78-EM 780G, the Asustek M3A78-EMH HDMI AMD 780G mATX and the Gigabyte GA-MA78GM-S2H AMD 780G. i think all 3 are micro atx which kinda sucks i guess, but i've only got one PCI cardi want anyway.
will a microatx still fit in an atx case?
Hybrid crossfire. Yes 3300 is better.

Go for 790GX with SB750 South Bridge if you ever plan to overclock your CPU.
Biostar: http://www.newegg.com/Product/Product.aspx?Item=N82E16813138128
Foxconn: http://www.newegg.com/Product/Product.aspx?Item=N82E16813186150 (I've had good experiences with Foxconn so far.)
If you don't want to overclock, your board is great.
You just lost the game.