depends what you want to do with it.

The creopop uses uv cured resins - so has no hot parts - but the 'ink' cartridges are very expensive.
Most of the cheap ones just use a hot nozzle and standard pla.
Sp pretty cheap to run.

And apart from some being cordless - they are all pretty much the same as far as what they can do goes.

They are nowhere as useful as you think they are :-)