depends if you want internal/external, AC/DC pump.
Im personally using a jebao dc9000 on my 120+40 frag system and I love it. its super quiet, able to dial it back, and it has a great price point. some people have issues with jebao products as apparently they have a high fail rate. Knowing this, when i set up this system, i purchased 2 pumps so i had a backup, but i havent had issues with the original pump yet at 1.5 years out.