I want to buy GS7E. Should I wait all issues to be resolved by update or it doesnt matter to buy now?

I really can't decide between Huawei Mate 8 Or Galaxy S7 Edge

S7 Edge
-I am not sure the curve screen suit me, if I try at showroom it is OK but don't know when fully use it.
-Is this phone having problem with suitable SP or case? the past 50 pages of this thread mostly to discuss about this. although it is a bit boring for non owners to read, I am afraid it might be an issue. Official case from Samsumg is ok or not?
-Although Antutu benchmark for this phone is more than 100k i am afraid that when it comes to real usage it does not differ with 90k score of huawei mate8
- being water and dust resistant is very bonus although i dont swim or shower with my phone

Mate 8
- i am using 5.5 inch phone right now, i dont have problem with 6 inch, but somehow i am not sure if i can use car holder when using waze or google maps etc
- how about SP and cases for this phone? is it a lot of choice?
- is camera on this phone is average? although s7edge camera is superior does it different with photo with good lighting?