supposedly radeon LE's 2d is sharper than the MX, but it also depends on your monitor.
i had a voodoo3 3000, which was crystal clear with my sony trinitron monitor, and I felt the 2d was just as crisp with my new radeon LE. i've heard the mx 2d quality is crap. the LE rocks, by the way. don't play CS though.
AG