In any case- it looks like you want a no-nonsense workhorse dry 'starter mill', for which I do, sorry, have to recommend a Roland, a DWX-52D is probably up your alley- it's a proven design that's reliable and precise, widely-supported by vendors and reasonably-priced, especially with the -53s coming out now. They're our zirconia and PMMA workhorses, we run 7 of them for 18 hours a day. It's a lightweight machine without much rigidity, but that's fine for zirc and PMMA stuff that isn't super-ambitious, you just won't be able to do monster roughing passes for dentures or whatever like you can with a PM7 or imus-icore or something much beefier. The -52DCi is the same mill but with a disc changer- you probably don't need one, and it'll shave a lot off the price to go without, but being able to queue up work and then go do something else for 6 hours is a beautiful thing, so consider it.
For bread-and-butter C&B zirc, Rolands are absolutely the most common pick across the labs i've seen, even big labs with the means to purchase much more substantial mills, and it's for good reason. PMMA definitely benefits from a beefier, more rigid mill with bigger tooling, you can cut down on your time per part by buying More Mill, but a Roland just takes a little longer to run those same parts. If you're not confident you need that extra productivity you can save a lot by starting out with a Roland and upgrading/adding to your fleet as you go, imo.