Best:
Alesis ADAT black face $4000 - Got a lot of songs recorded on it and still have them in wav files. Gave unit away after 10 years.
Mackie 24.8 mixer $4000 - One of the first USA made ones, got 12 years use out of it and sold it for $900 cash. Good usable preamps.
Yamaha NS-10m speakers $319 - Used for 12 years then sold for $550 on e-bay WOW !
AKG C-414BULS $900 - Used for 13 years and sold for $500, great sound, no problems. Broke me, but also broke me from buying lots of mics trying get a good sound. There were no cheap condensors in those days.
----Note: All the above gear purchased in the early 90s.----
Worst:
Fostex 450 mixer $900, did not get one good track or mix made with it, preamps hissed, gave it away to non-musician, so bad I was too embarrased to try to sell it.
Alesis PCR card (ADAT Edit system) $400, OK, I did get it to work on Windows 95 but the drivers were never updated for any other operating system and it was a real trick getting a good transfer from the ADAT took several tries and you had to listen to make sure there were no glitches. Total loss, have not bought a single Alesis product since.