I had to look up what Dream Motion is. Here is a link for anyone interested:
http://www.brother-usa.com/HomeSewin...nSoftware.aspx
For me, it would depend somewhat on how expensive and current the software is. If this is pretty new software, I would probably opt for a new Windows 10 tablet (OS will not become unsupported for a long time) with a fast processor (I personally hate slowness and hesitations in computers), a large screen with good resolution (because my eyes are not improving with age), and adequate storage. With just a cursory look at the Dream Motion requirements for a tablet, it appears to me that any of the following tablets would be adequate:
https://www.pcmag.com/roundup/310159...indows-tablets
Edit: Not sure that link provides the best information for your request, especially since it looks like you need a touch screen. Maybe someone else will know more.