I would recomend crimegaurd. i just installed one on a members car over the weekend. PM RND2000 and he will give his input on the alarm i installed. when you mean power locks open/close, did you mean adding lock motors or controlling the existing power lock system in the car? I can sell you everything for $225-250 depending on if you need motors or not. As a matter of fact, i bought a cell phone from you a few months ago.. the moto v551 i believe it was. i met you at six flags.
ANYWAY the model of the system is the Crime Gaurd 850i4-E