I'm currently waiting for replacement Naga 2014 number four, my original Naga was the Molten Edition I bought in 2011 for WoW, lasted about two years before developing the "double click" problem. So due to that and my finally contacting Razer again last year they've been sending me refurbished replacements in the form of the Naga 2014 since mid-late December of last year, I love the change to the side buttons to something more mechanical, it's much easier to navigate even without the position bump on the 5 key like the old Naga had, they just feel much better. I also like the green lighting more than the Molten which I generally kept it off on that mouse because it lived up to its name and generated too much heat making my hand sweat. Not crazy about the new placement of the forward/back buttons and that would probably be my only negative with the buttons. I haven't encountered the double click issue but that's because I probably haven't had one long enough to encounter it because within two months the glue they use to hold the rubber pinky rest/grip starts to leak/ooze out from under it causing a sticky mess.
After number two I was just going to give up with the RMA thing after receiving number three because they'd just send me another refurbished mouse and the cycle would repeat. Figured I would peel the damn pad off, clean it up and put some better adhesive on it. I practiced it with one of the previous Naga 2014s (future replacement parts) that they had me just cut the cord on. Taking the pad off showed me why the damn thing keeps doing it, the tape they use has a very excessive amount of glue on it and I imagine it doesn't start out so spread out but does so after being heated repeatedly to where it'll eventually come out causing the issue.
So anyway, received refurbished replacement number three last Thursday, plug it in and... Laser sensor didn't work. So here we go again, this time they had me send it back via FedEx, wish I knew they'd pick it up at my home because that might've saved me the 30 mile drive to the nearest ground drop off location. They're sending me a code to order a new one, I still fully expect to run into the glue issue again but after this replacement I'm done with the RMA shit. It's annoying that a now 12 year old cheap ball mouse that I'm currently having to use has been more reliable than mice that originally cost me $70-$80.
I also find Razer's Synapse software to be nothing more than a bloatware nuisance.
Before I bought my Naga I had a G7, also incurred the double click problem with their mice but they replaced it at least twice before I gave up and switched (partially because I did want a mouse with more buttons) but to their credit they replaced it with a brand new one and didn't have any hoops to jump through or refurbished crap, same with my original G15 keyboard which ran into problems after a year or so of use. I guess at least my original Naga lasted twice as long before having the same problem so I guess there's that.
Alright, done rambling.