Another Aftermarket Alarm Question

With the issues going on with the Mazda3 factory alarm (the thing about banging the passenger side door disarming it) I've decided that I should have an aftermarket alarm installed. Normally, I'd prefer to do something like this at a local audio/alarm shop simply because they, on average, do a better job than large chains. As well, they'll usually stand behind their work and fix any issues.

However, there is a very good possibility that I'll be moving out of state within the next year. It'd be just my luck that I have an alarm installed at a local shop, and 3 days after I'm far out of the area, something stops working... (and driving across the country to have an alarm serviced would be extremely hard to justify to my wife.) This suddenly makes the large chains sound a bit better. At least I know that Circuit City (as an example) has stores across the country.

What I think I want is a DEI (or AutoPage?) based alarm, with starter and 2-way. I'd also like the option of a trunk release on the FOB (which would involve having something installed to pull the trunk cable electronically.)

Given my circumstances, can anyone make any suggestions? I'm currently in Maryland (near DC), but I'm not entirely sure where I might end up. Some possibilities are NY, MN, TX, FL.

Thanks
Gary