I’ve had both, I’d say it depends. Octo 2 is quieter and more powerful and you can angle it. Downsides, ended up being too powerful for my 34 gal cube even at lowest setting and Octo app is a bit clunky. I got the plus with the octo wifi controller. Perhaps the one with the hydros wave engine can be turned down lower ? I dunno. Mp 10 has been steady Freddy can run as low is 170 gph, however noticeable noise since the motor is on the outside of the aquarium, also Mobius app for Mp10 is better than the Octo app. If you have a 3 or 4 foot tank I’d say go with the Octo pulse if smaller mp 10. I’m still running the MP 10 on my smaller tank and probably going to try a Nero 3 or 5 next.