Those were just some of my concerns not all. I can live without the S pen, I can live without the removable battery and micro sd since 64gb is more then enough memory for me. I really like the idea of having updates straight from google and having the closest stock Lollipop android experience you can currently get. I'm just not sure if that will be enough to prefer the Nexus 6 over the Note 4 since camera quality and screen quality is important to me. Also knowing whether the Nexus 6 can outperform the Note 4 in benchmarks would also help my decision
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Your entire reply reads of compromising for the Nexus 6. To me, it sounds like you'd be happier with the Note 4.
As I said, the Note 4's camera and screen are better than the Nexus 6. That's a given. You "living without" the battery, microSD, and S-Pen, even though you really enjoy them, would just be compromising for the Nexus 6.
So, you can basically sum up this...
Note 4:
+ Screen
+ Camera
+ Removal Battery
+ MicroSD
+ S-Pen
- TouchWiz (Some people enjoy it, but I'm writing it down as a negative due to the fact you want to use stock Lollipop)
Nexus 6:
+ Stock Lollipop
- No MicroSD
- No S-Pen
- Worse Camera (not bad by any means...)
- Worse Screen (not bad by any means...)
- No Removable Battery
To me, it seems like the choice is clear. Stick with the Note 4. In fact, if you're on Verizon or have the option to switch, just go buy the Note 4 Developer Edition when it's available and wait patiently for someone to release a stock Lollipop ROM for the Note 4. (Though, if they do this, you'll lose out on some of the S-Pen functionality.)
Also, the Nexus 6 and Note 4 will be about neck and neck in benchmarks. They use the same processor.