HTC has been very well-known for the build quality of their smartphones. And the HTC One M9 that debuted at Mobile World Congress in 2015 was one of the best built smartphones to come out in 2015. Although HTC was a bit drowned out due to the excitement of the Galaxy S6 and Galaxy S6 Edge that was announced on the same day. The HTC One M9 is still a fantastic smartphone, and coming in at $359, it's definitely one worth checking out. This particular model is an unlocked T-Mobile variant, so it will work on AT&T as well.
The HTC One M9 sports a 5-inch 1080p display, powered by Qualcomm's Snapdragon 810 processor and 3GB of RAM and 32GB of internal storage. There is a 2840mAh battery inside which is powering the device. HTC used Toshiba's 21-megapixel camera on the backside of the device, which had mixed reactions, but it's still a pretty amazing chipset. This device launched on Android 5.0 Lollipop and has since been upgraded to Android 6.0 Marshmallow. However, HTC has announced that it will be upgraded to Android 7.0 Nougat, but the update has not yet happened.
You can pick up the HTC One M9 from eBay through the link below. It's only available in the gunmetal gray color, unfortunately.