I second
@Wookii - I own 4 Tidal 35 (two in each of my tanks). I am really happy with them (low/no noise, low & easy maintenance, the separate filter media basket is just big enough for everything I need) . The surface skimmer is very weak though (wont suck up even small floating plants such as duckweed - which is a good thing
), but seems just strong enough to keep surface film off. The larger models (Tidal 55 and up) are indeed
equipped with an optional heater holder that keeps everything neat. An option worth considering if it makes sense for your tank size and space around the tank.
Cheers,
Michael