Tascam 16-track tape-recorder, help needed!!

[bonnie billy]

Hi everybody,
i'm going to buy a 2nd-hand Tascam 16-track tape recorder in a few weeks.
I have to choose between a Tascam ms16 and a TASCAM 85-16B.

The only thing I know is that they both use 1" tape, but I can hardly find any information on the net, believe me, I've been searching for hours.
The problem is that I don't know which one to choose and which one is better..
Can somebody please give me any advice?
I'd REALLY appreciate it very much!!
Thank you very much!!
Bonnie Billy