Consider a different mobo manufacturer. I owned a PCChips mobo and got dismal performance from it. The IDE speeds were pathetic, and I didn't even know that was possible. The sustained transfer between drives on two ports, was about 2/3 of this Biostar. That's with exactly identical hardware too. I had to swap the mobo because the wrong bios version got flashed. Couldn't have been me though, must have been a gremlin that did this. Granted, it was a different mobo model, but search for online performance reviews.
Also, I will never, ever buy another Sony product if it is within my power. Take a look at the NEC DVD burner that NewEgg offers. It's only about $40, and has gotten fantastic reviews.