Surface Book Battery Life - what are you getting

I have the Intel i5 256gb ram dGPU 8GB Ram model. Getting 7-8 hrs battery life, using hibernate and suggested screen brightness. Doing basic tasks.

Please post your model or SB with your battery life. I have the higher end version and would like to know if there's a difference in battery between it and the less powerful SBs, or if my unit just sucks.  

I get about 5-6 hours with battery saver on, 50% brightness, with 4-5 programs open.

Once at a conference I had Wifi off, location off, bluetooth off, 20% brightness, and I could have gotten about 8.5 hours, which is still not close to what was advertised.

I don't even hold down the power button I just close the lid, doesn't it still go into hibernation that way?

I'm getting great battery life just enabling hibernation and disabling sleep. I don't know why people are afraid to do that. Booting up from hibernation takes just as much time for me to wake from sleep, and I have Windows hello enabled, too. Getting 7-8 hrs daily use.

Well, there isn't exactly fear involved. ;-)  I was just somewhat reluctant to incur the extra SSD activity, but heck, today's SSD's are designed to last a lot longer than I will probably have my SB.  I'm sure I'll have to have the next version of the Surface Book.

So, I have turned off sleep and turned on hibernate.  Yes, it works just fine.  I do have to touch the power button though, unlike sleep where all you need to do is open the book, and BAM, you are exactly where you were when you closed the lid.  I still look forward to getting this fixed.

I'm getting great battery life just enabling hibernation and disabling sleep. I don't know why people are afraid to do that. Booting up from hibernation takes just as much time for me to wake from sleep, and I have Windows hello enabled, too. Getting 7-8 hrs daily use.