WildFire
Warrior of Linux
http://www.newegg.com/Product/Produ...m_sp=Cat_Motherboard-_-YTVideo-_-YT13-131-757
Has 2 x USB 3.0 internal headers for 104.00 don't know the quality of it though
Looks ok, but alittle expensive for your budget but you could factor it in.
To be honest, USB 3 is still a gimmick and isn't worth having for several reasons. eSATA will always be faster if you want external hard drive storage, so that leaves you with just faster flash usb storage - but then you need to pay more to get a capable usb3 flash drive - and then at the end of the day, you don't really need those speeds for anything apart from moving big files which then you need more space and more $$$.