I have found that the s/n ratio pretty much required the use of some sort of noise reduction.
I have also experienced the popular dbx units to really smear the bass image and levels.
Having bought those machines new (and others), I find that an inexpensive card (such as an Echo Layla) into an inexpensive PC yield far better results..both in accuracy as far as what goes in VS what comes out, and much cleaner sounding in many different aspects.
Those were/are GREAT machines. Do not get me wrong. The fact that I have paid close to 10 grand for Tascam machines over my recording years backs that statement up in my book.
HOWEVER, I have recorded A LOT on MCI/Sony, Ampex, Studer, Scully, Otari ... "wide" format machines, and never found the need for noise reduction. The bass was 'in your face', so to speak. I actually think I do probably like it better than "consumer" home digital stuff. But the size, maintanance, tape costs, harder to edit, etc, etc has kept me from getting a nice used 2" machine. I can hear a HUGE difference between those machines VS the Tascam stuff I used at home. That said, the better 1/2 track machines from Tascam are pretty decent and actually rival the 1/4" format machines that were more costly. But the 22-2 "budget" model barely squeeked out specks better than a cassette deck. Just gave you the "format" so to speak, so you could inexpensively give radio stations THAT format, when it was required...and actually worked out ok FOR RADIO playback..... The Revox decks were a good step up without getting into those larger "washing machine" sized 1/2 tracks.
Believe me, I probably would get a used Studer and a killer old analog console(the console I have had in the past), but currently a computer works just fine for me now. Selling my 400lb console back in the 80's was a chore... something I remember when I look at those consoles nowadays. ...not to mention a 2" deck.
But...that said....I visited Primal Gear in Nashville just a week ago, and lusted at a nice Otari Concept console and a VERY NICE MCI 24 track. ....all for less money than an average car. Kinda hard to say no, actually.