I have the P3 on my Sequoia, and it has worked great. I don't have anything to compare it to, but it is responsive, and I've never had any issues. Installation was easy for me because there was a connector already under the steering wheel that mated with the P3 via a separate wiring harness sold separately (I also have the towing package). Didn't have to run any new wires or make any other connections. Just plug in and mount.
Got it a year ago from pplmotorhomes.com for ~$120 or so, and there was a $20 rebate on top of that.
Dave