Listen man, nexus is example how android OS should work on the phone.
You can't compare other phones with nexus device...a specially UGLY and lagy UI as LG's
Back on topic>>>
the most chip price for G Flex located on Ebay.
U don't need to go NegriElectronics and buy F340K for 1000$ if you can buy on ebay for 700$.
You pay through PayPal so you have a warranty for several months, after that you can use your manufacturer warranty.
NegriElectronics is good website but I received problem with phone exchanged due to defect I found after 10 days. (it was a screen defect...I send many pictures etc)
They told me to send the phone back to them (Xperia Z Ultra), I did it. And after I purchased another Xperia Z Ultra to avoid exchange waiting time like they told me (price of the phone was 890$)
After 1 week Negri Electronics contact me with "Decline". We can't change your phone cuz we cant find the problem etc!
So I contact the paypal and explained the problem...after 1 day I received the message from CEO with huge apologies from him and management that declined to help me. They returned 70% of my money I paid for 1 device + the CEO offer me big discount for the next purchase I do.....but I never did.
So as you can see we all have bad experience even with NUMBER 1 GOOGLE trusted website NEGRIELECTRONICS.