You could always go old school and get a 4track cassette machine!

I still have my old Tascam from '97. That thing was over $300 new back then. Hah!
I was actually considering that, and then I read some stuff about how the Fostex flywheel was *new and improved* on the latest Xwhatever model, and I walked away. I need to know with 100% certainty that whatever junk

I buy, it will record and playback at perfect speed/pitch, with no imperfections. Anything less will drive me crazy. The quality of the audio can be rotten

but it has to play back at perfect speed/pitch every time.
Any of the low end Xwhatevers capable of that?