We purchased and had a plumber install this faucet as part of a kitchen remodel. We've been pleasantly surprised at just how convenient having the touch control capability is. It takes only a few days to get used to working with this faucet as opposed to a standard non-touch type but the convenience is immediately apparent and has banished my original thought of this feature my wife wanted being an unnecessary extravagance. To be clear, it's still an extravagance, but worth it; she's very happy and to my surprise, so am I. It's one of those "didn't know what you were missing" additions. We did add the AC adapter after I read a number of reviews where the steady power source seemed to resolve operating glitches for folks. We ourselves  had no issues during the first month or so before getting the adapter, but it adds a little peace of mind over just using the battery pack. Only time will tell how it holds up in our busy home kitchen, but so far very happy with it.