Infinite vs. Limited Use Incubators

There is no difference between hatching with each incubator.
However, if you want to get the most out of your temporary incubators, it is recommended that you try to only hatch 10km or 5km eggs in the temporary ones (preferring 10km). Doing this will allow you to be hatching more eggs at a time.

No, there is no indication of different results using different incubators.

I don't think there is any difference! Although I see a lot of people saying they do not like 2km eggs. Here is a bit of info for you: yesterday my boyfriend offered to walk around the block to hatch my 2km egg and he waiting for me to crack it open (I didn't want to walk anymore we had just went for a 10km walk for a different egg) Well as that 10km only got me a Zubat, the 2km gave me a Pikachu. I was very very very surprised and excited. I used my infinite use on the 2km and the limited use on the 10km. It is purely just luck everyone!! ☺️