Well, the P5QL-E is a P43 chipset. This is probably not a big issue... I have seen no comparisons or benchmarks but there is likely no difference in performance.

The -E will have a better BIOS, eSATA, and a few added features. Generally the -E from ASUS in any line is a middle-of-the-road MB that has the most important features of the more expensive boards, but costs less.

So, I would guess the -E is the best choice... but as I said there are no benchmarks that I know of.