Excellent Mobile. Review on Apple iPhone 6 Plus

Need your opinion guys. I never used any android device. Currently I am using iphone5s but I want to upgrade. I am confused in between note 4 and iphone 6 plus as I like both of it. I researched about both of them. What I come to know through all videos and comments that both devices are good at their own places but have drawbacks too like note 4 lags after some time, battery doesnt long last more than a day for a heavy user and battery issues of iphone 6 plus too. What made me confused are different opinions as some says both have superb battery back ups where some commented completely opposite. So, what do you think in which should I spend my money?

I prefer to have long battery back up, lag free smooth experience, good camera, fast internet browsing including hassle free instant messaging on messengers like skype, yahoo, whatsapp, viber, facebook etc and elegant look.