I went with the DroneMobile platform w/ CompuStar brain. It was a little pricey ($700 all-in), but it's fobless (integrated into the stock key w/ 3-lock-press to start) and it has an LTE module so it can be started, locked/unlocked, and have the heated/cooled seats and steering wheel started from an app, remotely, from anywhere.
Haven't got into a hot car in months. Best money I've ever spent.
Haven't got into a hot car in months. Best money I've ever spent.