This is a question you don't see every day
I'd be looking for something like a Wadkin BRA, very well-built, plenty of power, and not a massive machine as far as space is concerned. I think there was a few different sizes to be had like 12", 14" and 16" blade sized machines with varying powers, some being single phase (I also believe they can be run off an inverter or VFD if three-phase). They don't fetch silly money on your average auction site either, could easily pick one up for £300-500. There are other Wadkins, Dominions, Robinsons, Maggi, and Stromab machines to be had but they're usually very massive, very pricey or very 3-phase, But that doesn't matter too much if you've got the space, cash and three-phase on tap
Daltons Wadkins has a couple of excellent archive videos on the BRA and its various operations.
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