Purchased my first CANISTER filter EVER a few years ago after using AC110's exclusively my whole life, (still the best HOB in the world). It was the Eheim Pro3E 2078.
I had 3 of them on a 150G, they cost me a ton and I don't have a lot of cash, but it was worth it. Sold the whole setup years back, building a new 90G starting all over and you guessed it I'm running two more Eheim Pro3E 2078's.
There super quiet run fantastic, I just cannot say anything bad about them.
I did run them on a very understocked tank, bare bottom, but still they worked flawless the entire time.