Lots of others,... including:...
Tascam 688 cassette Portastudio,
Tascam 388, 1/4" reel Portastudio,
Tascam 238 Syncaset, 8-track cassette, (requires external mixer)
Tascam 38, 1/2" tape recorder, (req. mixer)
Tascam TSR-8, 1/2" tape w/dbx, (req. mixer).
All of these vintage units can be found for reasonable bid amounts. Condition varies. Of that list, I've personally used the 38 & 388, and I think they're just swell. The 388 is probably my favorite. It's the king of Portastudios, w/8x8-8-simul capabilty, that looks cools and sounds great, too.
The 388 may be found in the ~$400 range, depending on the day, & the 38 or TSR8 1/2" format recorders will be ~$350-$400, minimum, sometimes double that, depending on condition and bundled accessories. The 238 will run appx ~$175-$250, and the 688 will be ~$300-$450. There's a brisk used analog market on Ebay. Go find it, just search "Tascam", "Fostex", "Teac", etc., as well as others, too numerous to mention.
SO,... eh,... I'm an analog enthusiast, and those are my recommendations, above, with further exception of the Yamaha MD8, which is really a 4-Buss designed porta-studio-format-type unit, but through a combination of Buss and Direct recording, the MD8 will record 8-simultaneous tracks to Minidisc.
All the obove mentioned gear may be found used, at fairly reasonable prices. I'm not inclined to recommend a purely digital solution to your question, although digital's out there, if you want it. (The exceptional Yamaha MD8 is an analog/digital porta-format hybrid). That's my post. Thanx.
