Can't go wrong with Alpine or Kenwood. I like Alpine's ergonomics better. What I meant by alarm is you should get one. Even if you take your faceplate inside, they'll think it's in there. They'll also have visions of amps and subs, crossovers and heavy wiring. What I'm saying is that just seeing a head without a faceplate and no alarm is going to invite a break-in. I've made models of stock radio faceplates. The systems they hid were other worldly.