"store bought" no I personally use the havobator just because they are easier for me. I run 2 of them with no issues. But if you want something "better" you could always build your own. Plenty of "how to" information out there.
Ive been running 4 to 5 hovabators for about 2 years now, I have no complaints. During the summer I have to adjust the temp a bit, but (knock on wood) no problems.
Its very cheap to build your own incubator. If you use a good thermostat that will be the most expensive part. You can find older half size fridges/freezers for very cheap/free. You just need the shell, they don't have to work. Then you wire up your heat source inside, your thermostat, a little bit of ventilation(tiny bit) and you will have something that will out perform a havobator and hold many more clutches. My whole incubator probably cost $60 to build and recently added a better thermostat for about $80. I can probably hold in there 20 clutches of eggs at a time, more if I changed the shelving a bit.
Good news!!! not only are my little eggs plump and gorgeous looking, I shone a penlight over each one last night and I could see the veins snaking over the inside of the eggs! I’m really excited. They are 17 days old so far. Is it safe to say I’ll see the babies inside at about 30 days old?