I'm not real sure that i understand your question...

Do you already have the hardware and are looking for the best place for the installation, or are you looking for where you can get the best price for the subscription?
Or are you looking for the hardware itself?
Sorry! It's an old brain that has been depleted by years of abuse!
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2010 Blue RT Audio & Convenience model Se-5 transmision. Dealer-added foglights, accent LEDs and extra speakers. Some RTS chrome windshield, front spoiler and top trunk trim, RTS frunklight and frunk liner, Top Trunk liner, Chrome lower air deflector, fendertip LED bulbs and ISCI floorboards added by yours truly...