After buying a few new batteries it's like a new phone.
There's been so little innovation in the past few years. Not only do I not feel like I'm missing much, but I still have external batteries, SD card, Foxfi WiFi, TV remote, etc.
And over the past 3 years I've dropped my phone dozens of times without any protection and it's never cracked. It's not waterproof, but I jumped into a hot tub to save my daughter after she fell into one last summer and the phone was fine as well.
Impressive build quality.