Thanks for the info. I just picked up a used DOC 9410 for $125! :D I gave it a good vinegar bath and it looks almost brand new, but for a hairline crack on the lid which I don’t think will effect performance. Ordered some new ceramic bushings from Roger and the pump hums along pretty quietly now.
Originally I was going to run my tank with my Lifereef (which I absolutely love). But at 15 watts of power consumption for the Tunze vs anywhere between 50 to 80 watts for my Lifereef (depending on my pump selection), spending the $125 for the 9410 was a no brainer. We’ll see how it performs when I get up and running.