I'm ok with mine, pay for monitoring. The signal blocker isn't a huge deal in my mind since I don't think my house huge target and they would have to get past the indoor sensors.
Have a older "paint grew" model for 7 years now and I've got my 156 bucks worth out of it.... And no real issues other than the gun tip holder breaking once ($18 part)
It is a pain in the a$$ to clean up everything (a bit of time to do it right) but the sucker can put some paint down in a...