Looking for guidance with older VPI HW-19 tables

I'm looking for a table without a tonearm. I'll be mounting a Hadcock GH 228.

I'm not married to the idea of a VPI HW-19, but they're common in the classifieds and seem to offer a good bang for the buck. However, I'm not familiar with all the variations: Mk i, ii, iv, etc. Are there particular models or upgrades I should look for? Any guidance would be appreciated.

I don't think the HW-19 series is being supported by VPI anymore, which brings up the question whether parts (like the bearing) will eventually become unavailable.

And speaking of bearings... how do you determine if it's good? Buying a used table is like buying a used car. There might be problems lurking under the hood. Do you have any suggestions on how to flesh this out before hand?

Many thanks!