To add a bit of comic relief, I've used an original Mackie CR-1604 for nearly 20 years and it works just fine, though not as slick as a more dedicated, inline recording console. However, it's been in the shop for about a month, pending replacement of a defective phones/CR output fader. First issue in 20 years so I'm not really complaining.
In the mean time, I'm back to using a pair of Roland SMX-880 line mixers that I bought 30 years ago and not really minding it. Those are the same mixers I started mixing with my Otari 4-track back in the early 80s. I remembered that I also have a little M-Audio DMP-3, and that is a perfectly good two-channel preamp, which is about all I need. I wasn't using it much because the Mackie preamps are adequate and I was kinda annoyed that the DMP-3 doesn't feed power to the VU meter lamps any more, but really, that's no big deal.
Anyway, lack of sends makes running effects at mix time cumbersome, but it really hasn't been a big deal. I record the effects when I track or use the patch bay to connect the tape track to the mixer and an effect at the same time. The same applies to eq, since the line mixer has none, but that is simpler as I can just patch to an eq and then into the mixer.
The sound of these line mixers is superb. With so little circuitry in the way, the sound is very accurate to what comes off the tape. Very cool and reminiscent of my early recording days.
Anyway, that's my humorous setup at the moment. The interesting question will be whether I immediately change back when the 1604 comes home. The other nice feature with the line mixers is that they are in the angled rack that is the back part of my mixing desk, leaving the desk space right in front of it open for a writing space and other various musical activities. That is very handy compared to filling that space with a mixer.
OTOH, I recognize that most folks would probably not want to be limited by simple line mixers. During the 90s I had both the Mackie and
a Tascam 388 and I really liked the mixer section of the 388, so if I we're buying a recording mixer, I'd be more inclined to go with the Tascam mixer over the Fostex, just because it would seem more familiar. Plus, I don't really need more than 4 channels sent to the recorder. The Mackie is at most a "4-bus" mixer, but it has a total of seven different aux sends, so you can essentially use those as separate recording channels, if need be. I use the monitor bus for recording all the time, because that is the one that bypasses the channel eq section.
Cheers,
Otto