I have several Betamax VCRs. A Sony SLO-323 (industrial VTR with linear stereo), a Zenith Video Director VR-9000W (rebadged Sony SL-5400), a Sony SL-5400 (ßII/III top-loader), a Toshiba VM-32 (mono front-loader), a NEC VC-N70EU (Beta Hi-Fi front-loader), and a Sony SL-HF2100 (15th Anniversary Betamax).
The 2100 is a very fascinating machine; the second-to-last consumer Beta machine released, it has all sorts of fancy features, such as SuperBeta (and ßI-S "Super Hi-Band" mode, as mentioned in the post above), auto-tracking (a first for a Beta deck), and S-Video jacks (only consumer Beta deck to have them). The entire front panel is comprised of touch-sensitive panels, making it perhaps the only VCR ever made to not sport any physical buttons (even the RMT-2100 remote control, which I do not have, was a big LCD touch-panel). It worked when I got it, but playback fuzzed out to static 15 minutes into the tape I used to test it. Hoping that cleaning the heads will fix it, as I expect it to be the best Betamax deck I'll ever own. Not bad for a $19.99 surplus sale buy, anyway...
Fun tidbit: my Zenith VR-9000W was supposedly once owned by late fashion designer Bill Blass. I found it in the back room of a local antique store, and the store owners claimed that it had been found in his summer cottage, along with a stack of Betamax tapes of his fashion shows. The owners made a deal with me: if I could confirm what was on the tapes, I could have the Zenith. I took the tapes home with me, stuck them in my Sony SLO-323 (the only Betamax deck I had at the time), futzed with the tracking to make them halfway-watchable (being ßII tapes, and the Sony being ßI-only, I had to use the X2 playback speed mode), and what should appear on the screen but several runway models outfitted in the finest '80s pastels (the tapes comprised several collections, spanning 1984-88). I took the tapes back to the antique store, gave them my report, and the Zenith was mine. Of course, I have no documentation to back up my claim, and the antique store is long-defunct. All I have are my memories of those pastels...
-Adam