Well, sice you "got" the Intel Core i5 3730K, get a Z77 mobo.
If the Z77 has "nothing you need" step it all down to a Intel Core i5 2500K in a Z68 mobo, like Asus P8Z68-V Pro, or less.
I personally won't put an Ivy Bridge CPU in an older board, even though they will work with a BIOS update.
I'm turning people away form the IB, due to heat issue during overclocking. SB CPU OC much better, IMHO.
Recheck the features of the Asus Z77 line up and decide what you need.
I don't need all the feature either, like: Wifi, Bluetooth, add-on SATA controllers, USB 3.0, eSATA, Firewire, PS/2, Triple/Quad Xfire/SLI, or PCI x1.
But when you eliminate all these features, the boards don't have high rated voltage regulators for overclocking (like 12+4).
So, damned if you do...