The decision is much obvious, one should have both. That is what I am having. My path: new 770 from box, running 2006OS, clone to MMC (2006OS MMC), flash to 2007He2007.36-2, clone to MMC (a different MMC card, 2007He on MMC), re-flash the 770 back to 2006OS in planning.

Then I got both video and BT.

bun