Just to add something to chew on...
For what a lot of these new mini mills cost you could very likely find a used Bridgeport or other full sized knee mill. Shop around enough, and you may even find one that already has a DRO, vise, tooling, etc... I'll bet Pennsylvania still has a ton of used machine tools.
I know a lot of guys claim space as an issue, but the reality is that by the time you factor in work bench or pedestal space for a benchtop mill, a full sized knee mill really isn't that much more room. Maybe an extra foot or two to the left or right, and a few inches in the front.
If it's a 3 phase machine, you can run it off a $60 VFD (assuming you have 220 available), or you can retrofit a 110V motor.
Caveats: Yes, they are heavy and a pain to move, but you only have to move it once. Some sellers may even be able to deliver the machine, or split the fee with you.
Yes, tooling can be more expensive in the long run (larger vises, collets, etc...) but most of it will be comparable.
I purchased my knee mill from a machinery re-seller about 3 hours away for $1500 to my door. They loaded it on a pallet and used a drop gate and a pallet jack to put it in the corner of my garage (after tilting the head down of course). It didn't have a DRO (I added later for $300), but it did have x and y power feeds.
I couldn't imagine having a smaller mill at this point, and there are times I actually wish it were bigger. YMMV.
No matter what you end up going with, do make sure to plan on spending around the same amount on tooling as you do on your mill. (indicators, vises, collets, mills and cutters, parallels, edge and center finders, v-blocks, etc...)
if it comes apart, the upright section will probably still weigh over 100 