There's a difference in price (UD5 > UD2H), physical form factor (UD5 is ATX while UD2H is micro ATX), UD5 can handle triple crossfire or sli while UD2H handles 2, UD2H has one more SATA port, and minor other things. You have to explain what you are looking for in a motherboard to be able to answer your question.
Well, I'll use it for everyday use and maybe some slight gaming and I thought of using it with a i5 2500k as a i7 2600k wouldn't make much of a difference for my uses. I'll probably overclock it to 4.5 max and use a SSD (if it makes any difference? I'm a noob + a noodle).