I have to admit, I am one of the DOS XL users. It was my first DOS, got it with my Indus GT. I still like it, and I find it to be somewhat more compatible than other more advanced DOS's. I really like the new versions of SpartaDOS X (thoroughly impressed and awed by what those guys are doing with it), but, I have trouble getting the Atari Macro Assembler and its editor to work correctly with it. I also used to use AMAC when I was younger, and feel nostalgic for both it and DOS XL.