I currently have a sprint LG g3 it keeps freezing on me and I'm due for upgrade which phone should I upgrade to? Samsung Note 4? Galaxy s5? IPhone 6? Or any other good phone out there?
The G3 is a large phone. I take it that you are comfortable with that size.
I think your answer lies in the following questions:
1. Do you buy the phone, power it on, and keep the homescreen exactly like it was when you took it out of the box, or do you like to customize your homescreen with widgets?
2. Do you ever take off the back cover to change the battery or SD card?
3. Are there any Android-specific apps or features that you make significant use of?
If you answered the latter by #1, no to #2 and no to #3, get the Iphone 6+.
If not, get the Nexus 6.
Samsungs tend to have the highest specs, but their TW UI has still not been perfected and can be buggy and confusing. If you are going to choose Android, stick to the Nexus.