1. IPhone 5S - arguably the nicest, easily the most expensive.
2. iPhone 5C - Made of coloured plastic. Still great. My wife's phone.
3. Nexus 5 - The Google phone, awesome piece of tech. My next phone.
4. Moto G - Google bought Motorola and tasked them with bringing out the best budget smartphone. This is it.
Reject all other devices if you want to be happy. iPhones are a bit nicer, but if you’re on a budget, get a Moto G, sim only, it’s the best budget smartphone currently available by a considerable margin, and your contract will be cheap as chips.
(Special interest in mobile technology

)
You forgot the Samsung galaxy series. Best smartphones on the market. iPhones are just an expensive POS and all you are paying for is a brand name.