Which inexpensive reliable printer to go with?

[djprinter]

What's the advantage of having two extruders? Can it print the objects(s) faster, or more than one object at the same time?
Thanks!

if the object being printed is smaller than the distance between the two nozzles you can "ditto" print, but typically the reason to have two extruders is to be able to print supports in a dissolvable material. It's also nice to have the option of having two different nozzle diameters available.

One extruder should be fine for your purpose.