Sorry I am late to the thread. I use two eheim 600 compacts and love them. Dead silent and decent flow. I supplement the tank with a koralia for directed flow across a couple monti's and pocillopora. Hope it works out for you!
Lagoon 25 IM
Left chamber: filter floss
2nd chamber: marine pure/ato sensor
middle chamber: pumps, heater, used to have tunze 9001 skimmer but removed (hard to dial in)
4th chamber: Refugium (remove >softball of chaeto every 1-2 weeks).
Right chamber: Intank media basket with filter floss and occasional carbon use
Redsea Coral Pro Salt
Water change q2 weeks
Photon V2 24" lighting (got used) @ 45%
stock: leathers, softies, montis, easy sps, some LPS that doesn't grow that well, anemones (5 rose bubble tip)