Anybody have experience with the Fluval U4?

[Scrappy71113]

I'm looking at filters for my Jack Dempseys new tank, and I was considering an internal filter instead of a canister or sump. The Fluval U4 caught my eye and I was wondering if anyone had any experience with it?
What are your thoughts on it?

 

[phreeflow]

I’m running one on a small tank and it’s been fine. Nice and quiet and easy to maintain.
But on a larger tank, you can’t beat a sump

 

[Scrappy71113]

I’m running one on a small tank and it’s been fine. Nice and quiet and easy to maintain.
But on a larger tank, you can’t beat a sump

I have sumps on 2 of my bigger tanks, but I'm honestly running out of room and i need to start double stacking tanks.
I have plans for 2 more large tanks, and 3 small tanks, then I need an intervention lol