Hi Roger
I do not know the Mf70 directly but I guess I can estimate what it is capable of.
In my oppinion, the question is what you want to do with it.
If you want to engrave things and mill really small parts (1mm endmills) then its ok.
But as soon as you say 3mm endmill in aluminium or brass, you will have a lack of torque. And rather high speeds.
Of course it would help you learn cnc but then you would again only be able to machine really fine stuff.
In case you intend to machine bigger stuff, I would rather look around for a little milling machine in the size fo a mini mill. Those machines are not doing huge stuff but they can produce chips and not just dust
Florian
ps: Oh and I have just seen that the spindle motor of this machine has the same power and rpm like the one of my Proxxon IBS. This works for a 1mm drill but not much bigger. (not enough torque)