PoE splitter is as good as PoE built in IP Camera?

[Roman.CA 0]

Need to build reliable house grade IP camera setup power is a btch so i am going PoE.

 

Now selecting actual IP cameras PoE enabled cameras cost more and less selection than regular IP cameras, considering a spitter

 

Whats main difference between:

 

1. PoE camera with internal PoE splitter

2. PoE camera with external PoE splitter (built in)

3. Non PoE camera with 3rd party PoE splitter (~$10)

 

Is there any difference in reliability or whatever?