My own favourite Atari is the TT.
I still have my baby and wont let her go.
But as for xfering files to/from the PC, I myself have gone the ZIP route.
My PCs and my Ataris have ZIP Drives now as well as CDROM.
However I have also found that while each drive works great within itself, the disks dont like being wsapped about... I think the Heads are not quite in-line.
I also have compact flash adapters too. These can be had for pennies these days.