As detailed at BGR, a tech site for mobile consumer devices, it's better for your wallet if you're not an early adopter of mobile (or, really, any) technologies. This graph explains why not:
The latest phones will cost 25% less in under 6 months. Don't buy into the marketing hype. New phones are simply incremental upgrades over the previous generation--this fact is glossed over by manufacturers touting new "features" that most people will never use.
In my article on Premium Laptops for 2015, I explain another peril of being an early adopter: finding out (the hard way!) about bugs, glitches, and hardware problems with a device.
Moreover, as I've explained here, Samsung engages in particularly onerous business practices. Nothing like intimidating customers who dare to complain about your product catching on fire! (Especially when that faulty product retailed for $650 [off-contract] when it was new, and apparently still sells for over $500 at some places!)
I think I'll leave everyone else to spend their money on the latest "gotta-have-it" stuff. I'll stick to my current phone--and when I have to replace it, a less expensive low-end "bargain" phone like one of these will still represent an upgrade that will keep me happy--without costing an arm and a leg!