The p5q and the GA-EP43-UD3L both seem great! i have changed my mind about which one a few times after looking at them. i think i am going to do with the GA-EP43-UD3L though since it is a little cheaper and i hate rebates. i bought an 5770 earlier today for $150 but i dont think im gonna do crossfire for the GA-EP43-UD3L is probably good enough.
I personally own the ga-ep45-ud3l/ud3r/ud3p all are wonderful boards i'd go udr3 if you want raid support or go ud3p if you want sli/crossfire support
Personal performance wise look at the 3 boards i'd go ud3r or ud3p the ud3l is a more stipped down version for about the same price as the rest also make sure you get the most recent revisions 1.1 or greater
Works great. Only thing readers should be careful for is to turn on legacy keyboard in the bios if your usb keyboard isnt registering in time for grub. Was the first thing i tried and did the job: 1 minutes tops.
Not much else to say since i got the GA-EP43-UD3L and it didnt have a rebate; if i got the asus one i would comment on the rebate status.
All in all things are as one would expect; which is good because my old motherboard was acting up.
Havent overclocked yet; havent ever felt the need even with last gen processor.
Also if you plan on booting windows or setting up a dual boot make sure your disable the 3.5 disk drive it will say A: drive this will cause a serious boot hang with windows 7. Disable full boot logo and keep the quick boot option as enabled. There are a few other things to turn off that aren't needed that will significantly increase your boot time from around a minute and a half to around 30 seconds or if your using an SSD like I was to about 12 seconds to boot from powering on to being in windows.