Have you also considered Amazon Prime Video? Similar cost however you get lots of additional benefits with Amazon such as free next day delivery, access to ebooks for kindle, Amazon Music, etc. Also full HD content and HDR is included in the price whereas with Netflix you have to pay more (£7.50 a month i think?).
Suppose the big thing is if you are already hooked on any Netflix exclusive shows, if so you only really have one option. If you aren't after any particular show though Amazon has plenty of good content (Mr Robot, The Man in the High Castle, etc).