Default Non-biased advice on the LG G3 please!

Hi,

Been contemplating getting the LG G3, I really like the specs and the screen size however Ive heard completely mixed reports about how good it performs. Lots of people say its laggy, then other say the updates fixed it, some say they didnt fix it etc etc!

I went into carphone warehouse today to test one, which probably didnt have the latest update, and did have large amounts of crap on it... but it was incredibly slow, opening a picture took about 2 seconds, going back to home screen etc took forever, compared to the HTC One m8 it was like a prehistoric phone.

Could anyone confirm whether the lag is actually fixed cuz I kind of really want this phone!

Cheers

Adam