I've had 4 Rena XP3's running for 6-8 yrs now. All FW, so take that with a grain of salt - cheap pun intended. Haven't had a single problem with any unit. Imho they are the easiest canister to maintain of the brands I've owned (which include Eheim and Fluval). They are also very quiet, though not quite as silent as Eheim. For a living room they should be just fine, if it were a bedroom though I might go with Eheim. As for micro-bubbles, you might see some for a short while after starting/restarting the filter, but then no.