Most remote starters are all made by Direct Electronics (DEI) including Viper, Clifford off the top of my head. I had a shop that specializes in remote starters recommend Clifford. Its a 2-way, which I knew I wanted going in. I had mine installed for $400 including all parts. Whatever you do, I highly recommend spending the extra money for a 2-way. The range is further plus you'll know when your truck starts if you don't have line of site to see if the thing starts.
Also, don't have them hook up the horn output wire. The horn will beep whenever you lock or unlock it no matter what the setting is in the DIC. Very annoying to hear the horn beep 4 times to unlock all doors.