http://www.xbitlabs.com/articles/mainboards/
There are a lot of options. Pretty much any of MSI, Gigabyte, Asrock or Asus make excellent boards nowdays.
The main differences lie in
1) Features - how many SATA 3.0 port do you need? Do you need PCIe 3.0 functionality? Do you need 2-3 PCIe 16x slots? Do you need great onboard sound like Creative XFi, etc.
2) Warranty - Length of warranty and Advanced RMA option in first year of failure
3) Price - Boards span from $80 to $400.
4) Bios - Asus has the best UEFI bios implementation at the moment.
The motherboard I've been looking at is the Asus P8Z68-V PRO Intel Z68.
Hmmm
This
Z68 board from Gigabyte has gotten great reviews. $160 isn't too expensive either given how many features it has.
Notable features include 4 x SATA 6Gb/s ports, 2x PCIe 8x CF/SLI support, D-Sub, DVI-D, HDMI and
DisplayPort video outs, eSATA port, IEEE1394 (FireWire) port, 2x USB 3.0 ports.
All Intel processor power-saving
technologies were up and running
during all our overclocking experiments. In idle mode the system automatically lowered the processor core voltage and clock frequency by dropping its frequency multiplier. [This is unlike modern MSI boards which seem to disable this fuctionality in overclocked states] -
Xbitlabs Review
Unless you absolutely need 2 firewire ports, bluetooth and 3 PCIe slots, then I think this Gigabyte board offers pretty much what the Asus board you were looking at does, but for $40 less.