I had the LG G3 for awhile and found it was a great device.
Personally, phone reviews are like movie reviews.
If you want to see the movie, a review is not going to stop you.
No device is perfect.
A few annoyances are bound to slip through when any item is mass produced, but I don't think you can go wrong getting the G3.
Let us know what you do and if you have any other questions.
My Note 3 was the first Android device I've ever owned and I came from an iPhone. A tip is just go in and clear ram and open apps and you won't have issues. I never have.