I have both a Mat 124G and an Autocord. While both are capable of fine results, I prefer the Autocord. The lens is indeed a bit sharper and more contrasty.

It had a quirky loading system in that you loaded it from the top down rather than the traditional bottom up
That loading system was superior, probably resulting in better film flatness that other TLRs. In addition, the focus setup on the Autocord, which swings across the bottom, is very comfortable. All in all, a fun camera to shoot with.