I'm running a Thinkware Q800pro 2-channel dashcam hardwired (installed myself) with the Cell-link NEO battery and extender battery. It's an excellent 2k resolution cam with parking mode and enhanced night vision mode to record in low light settings. I caught my neighbor hitting my car on it at night.
Awesome! I think you would be happy either way you go. Mine is a bit on the pricey side. Blackboxmycar.com is where I got mine. Using promo code "usdash30" should get you a discount on any model you get.