Luv...I actually own both.
I HATE the small two windows on the Hovabator...You just can not see in it at all. We use a flashlight and do something resembling contortions to see. The fact that it is styrofoam I believe makes it prone to temperature fluctuations due to my drafty old farmhouse. But, with that said I do use it as my hatcher & it was reasonable to purchase.
I love the little mini...it keeps temps & humidity well...but, it is small. It has issues when trying to hatch large eggs. Close to set it and forget it as you can get.
I had issues with both and wound up with a cabinet. If I hadn't bought either and know what I know now i would have invested in the Brinsea 20.
But, there are a lot of good products out there and any of these may work for your needs.