Wow I thought this thread was dead. I still use it every day and I will go over some of the issues I have with it.
Uninstall the pre installed anti virus. It really slows it down a lot.
Lenovo has been slow to release updates especially to the video drivers. Both for Miracast and the HDMI. Very poor orientation problems using both.
Battery life is ok reaching around 8 hours with high brightness.
Charging is another issue. Not getting good result with a car charger. And yes I have tried several.
It does work well with a Bluetooth mouse though. Directly connected without a dongle.
It is also very responsive with a Bamboo stylus. No issues there.
Is it faster than the DV8P? Yes.
Is it worth the extra difference in money? That's a hard one to answer. For me the extra screen size and speed is enough. For most other people I would say no.