I don't own one but I have owned/own Brother, Bernina and Babylock embroidery machines so I'm pretty familiar with the different makes and models.
Brother has a good reputation and this, to me, looks like a great machine for a beginner. It's a mid line machine and has computer capability, which is a big plus. It's also not pricey, the best price I found was $299 which is reasonable for this type of machine.
The only limitation is the hoop size capability, it is 4x4, so all designs must be within that size. Several years ago, I sold a used low end Brother embroidery machine to a coworker, for his daughter, that was limited to 4x4 and that was never an issue for her. She's still using it and it's still going strong.
I consider the fact that it is embroidery only to be a big plus as well. I've had combo machines, that sew and embroider, and I never sewed on them. I used them strictly for embroidery even though I had paid a premium price to have both functions. My embroidery machines now are strictly embroidery only.
I think this is a great machine for a beginner.