I'm sure everyone would recommend to go bigger than you think, and make sure you are buying for quality and ease and not novelty or "cutesie," as I did. I've been lucky enough to have decent hatches with my R-Com Digital 3-egg Mini, but I wouldn't recommend it at all. Number one, it's small, number two, there's no way to bump your humidity at lockdown. I loved my first few hatches in the summer, when the outside humidity was already at 70%, but it took work this last time, as this is the latest in the year I've ever hatched, so our natural Florida humidity wasn't as high as it is in the summer. I had to do a lot of misting with a hot water bottle late into the night, then go to sleep with my fingers crossed!
Definitely following this thread. I'm selling my "novelty incubator" and heading for the big leagues next spring. It makes a heck of a lot more sense to spend $100 on a fine incubator rather than being suckered into spending twice as much on something that holds three eggs and comes with a "candling microscope"...and I use that term extremely loosely. Lol
Good luck!