Thanks for the reply, but I decided to go with the 75FRN2-RL after not getting any replies.
I have always had nothing but bad experinces with boards with onboard video and after a little searching I found that the SL-75MRN-L is identical to the 75FRN2 in all the important points. The only difference is the Northbridge module used, where the M in the type designation stands for the version with on-board graphics, which however proves to be slightly inferior to the 75FRN2 in most of the benchmarks. Nevertheless, the differences are minimal, and barely noticeable in practice.
Board Revision: D
BIOS Version: 1.1 (May 6, 2003)