Decided to upgrade to the Thinkware U1000, watched a lot of videos comparing it to the DR900S which I already have been using. I now have the DR900S in my company car to upgrade from the DR750S.
Definitely better picture quality both at night and during the day compared to the DR900S, even though they're the same front camera resolution. The BI-750 battery works perfect on it, so the camera will remain in parking mode until the car is turned on. I also wired up a switch inline with the constant 12v output from the battery to turn the camera off (don't need it to record parking mode while in my garage @ night).
Always excellent customer service from Blackbox My Car. I didn't need to contact them before or after this purchase, but if I had to, I know the quality of the service would exceed my expectations.