Is the BlackVue DR900S-2CH the best Dashcam currently on the market? Apparently it uses a SONY STARVIS Sensor, but does anyone know specifically what sensor type it is? After having two vehicles vandalized recently, I would ideally like a 2-channel system with parking mode. I'd like to get the external battery pack for it, but they can be quite expensive. B-112: $154 12 hours run-time B-124: $300 24 hours run-time Should I bother with a battery pack, or just hard-wire it? Thoughts? Any different recommendations for quality dash-cams with parking mode? Thanks.