I'm going to throw my opinion in.
Brinsea and r-com are two of the best set them and forget them incubators...but they are pricey and hold half the capacity.
The only styrofoam incubators I would recommend are from Hovabator line. The 1588 is the most popular model right now. Picture window, full digital.
I've heard some real good things about the Incuview, but I don't know a lot of people that have used them.
The Little Giant digital incubators and the cheap Chinese knock offs aren't worth the money, especially for a new hatcher.
Janoels have decent reps.
Farm Innovators have very mixed reviews, I've seen people say they liked theirs and I've had people say they were no better than the lgs.
For 2 1/2 years I used The Little Giant 9200 (non digital). It was already 3 years old when I "borrowed" it from my sister. Had great hatches with that thing, even a 100% hatch w/20 eggs....but it was a lot of work, a lot of monitoring and a lot fidgeting. I just replaced it with a Hovabator 1583 (I went with the non digital equivalent of the 1588 because one it's cheaper and two I don't need digital because I use my own therms and hygrometer and the 1588 is reported to be more sensitive to higher humidity.) I am loving the 1583. Holds a steady temp and humidity. I feel like I am not doing enough.
I prefer to hand turn. I started with a turner 2 1/2 years ago and switched to hand turning on my second hatch. I personally believe hand turning is better (especially with shipped eggs.)
Any hygrometer will work if it is checked for accuracy. And if you monitor the air cells for growth you'll know when and if you need to adjust humidity.
Candler...A nice bright flashlight and good technique is all you need for successful candling. (And I am a candling addict. lol)
I never use less than 2 thermometers (usually 3) and never trust any thermometer (even on the bators) unless you check it for accuracy. A thermometer that is not accurate can cost you the whole hatch. Many people swear by the
Brinsea spot check thermometer to check their temps.