Hey Brad,
Nice price!!! I would have looked for another unit at the time except that
my Fostex D-5 DAT has optical SPDIF in/out's on it which the Marantz has also. At the time, the Tascam unit was a "vapor box" (you know, the unit that is advertised but not currently shipping) so I went with what was affordable and fit my needs. My buddy who bought the next up Marantz unit paid $1800 for the luxury of having all of the available digital I/O's!!! The Marantz also has Balanced XLR in's, something the next up unit didn't have.
The Tascam sure sounds like a nice buy. If they are going for $700 now, well, that would be the unit to buy.
As far as trusting a name. Well, I have had my share of problems with Tascam gear in the past with their DAT players. I bought the Marantz based upon the recommendation of a consultant that I use. In the past he has never had a problem recommending a good piece of gear that he doesn't sell, but he has pretty strict standards for recommending, so, I believe that the Marantz can be trusted every bit as much as the Tascam.
Usually, once you start getting into higher end gear quality difference are not even an issue. Usually, it is features and price that will guide the decision.
Hell, I am seriously thinking about the new Alesis box. That thing is loaded. But at around $1600 I will wait for it to come down.
Ed