Are you looking for contracts or just buying the phone?
Until a few weeks ago I would have suggested what I bought, if going SIM free.
I got a Lenovo P2 from Three for £199. It’s bloody brilliant.
I wrote a few comments about this phone here:
http://singletrackworld.com/forum/topic/lenovo-p2-owners
but ElShalimo reckoned that none were available through Three anymore, which does seem to be the case. Plenty of online availability though, but not really shops I have used or heard of before.
I honestly don’t know why you would need a better phone than this – unless you really want cutting edge.
Everything about it is good and works well. Took a while to get used to the screen size, but picked up my old phone the other day & it now feels like a kid’s toy….
Other brands to look out for:
Huawei
Honor
Motorola G5+
Or get a refurbished phone from Sony or Samsung…..