Don't let them convince you to get a Dobsonian, stick with the refractor, gives nice star images & is virtually free.
As Brian said both most liely are produced in the same factory, with just a diff badge.
As for mount, the az3 is much easier, just plonk it down & start observing. If you wanted eq prob better to get a goto one. I find hem frustrating for visual if manual, & you have o align them to the pole each time
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