Speaking of CNC capabilities, half a dozen years ago there seemed to be a whole cult on the web, of folks using the Grizzly G0704 (perhaps the most popular unit used at that time) and units of similar build with other numbers and/or other brand names, doing home conversions to CNC and there even seemed to be kits available to make the conversions. Don't know if that is still true today, as I have no intention of doing such a conversion, so haven't been following those sites. I'd guess that is now "less of a thing" as dedicated CNC hobby sized mills are probably more available now than they were back then.
As for the DRO option, I cannot recommend it too highly, and were I to do it again, I'd have bought my mill with the factory DRO installed. Instead, I purchased an after-market DRO and installed it myself, which has actually worked out just fine, but it was a whole lot of work that might not have turned out as well as it did, and which ended up saving very little, if any, in total dollar outlay.
That was my next question, I've never used a DRO before, so really don't know what I'm missing, had a long talk with Doug (CrazyDoug)yesterday & he also strongly agrees not to buy a Vertical mill without this DRO feature, I am now leaning towards that direction & would like to hear more of the Pro's & Cons of a DRO please.