Smithy vs. Shoptask

While I'm not yet able to afford it, I'm still looking forward to the
prospect of getting a CNC mill-lathe. I would like some more details from
experienced users of the Shoptask 17-20 XMTC Gold at $1295 and the Smithy
Granite 1324 CNC at $3195. Obviously the Shoptask is much more affordable
and the weight and swing figures are about the same. The milling figures
appear larger on the Shoptask except for spindle bore -- how important is
that? Is there anything else I should be concerned about?

What I really need is a CNC that can easily deliver 0.001" tolerance and
perhaps 0.0005" as many of the parts I want to make are pretty tight or they
don't fit. Neither Smithy or Shoptask responded to my email. Does anyone
have experience that one is easier to get that tolerance repeatably on?

And what about the software of their recommended CNC packages -- is one
easier to learn & use than the other? Although price is very important I'd
hate to find out I made an expensive mistake. So what else should a
first-timer look for?

Thanks,
Kirk W. Fraser