I have a Samsung Galaxy s4 mini, I got it on my contract upgrade. So far it's fantastic! Good battery, camera is good, internet is easy to use, the texting system is great (although I need to fiddle with the autocorrect settings).

My previous phone was an HTC wildfire. It was... moody to say the least. It would just decide to not send messages, or recieve them, or tell me that somebody was calling etc. The internet crashed a lot. I probably should have had the phone looked at xD