I'm looking at this one, because its price is very attractive (but very open to other suggestions too! So long as they're sub US$200):
http://www.gearbest.com/cell-phones/pp_204055.html
Network:
2G: GSM 900/1800/1900MHz
3G: WCDMA 850/1900/2100MHz
4G: FDD-LTE 1800/2600MHz
Would I thus be correct to assume it will work very well in city areas (I live in Auckland), but would end up having rather more spotty reception than usual in rural areas?