SNIP
" I am told that Asrock is a cheaper range "

I have to agree with that. In a number of years of building The Asrock is
the only boards I Have ever had a failure on (and I have used some crap).
Not a catastrophic failure I may add, rear usb ports died. However I bought
it thinking it was a quality item. I forget the model, was one of these
maplin bundles that at the time seemed like a great deal.