The PMD661 is the only small recorder that has full size switchable mic/line XLR inputs and a spdif coax digital input that I know of.
The Marantz is more like a full size deck, without the full size.
Tascam makes great stuff as well, and I have a couple of their DAT machines and a CD burner that are still chugging along just fine.
If you don't need the digital input or XLR line in, I am sure the Tascam will work for you just fine.