EE are the worst company I have ever had to deal with. They can rot in hell as far as I'm concerned,
They deal with coverage pretty well. But if you need to contact them with an issue, good luck.
Terrible customer service. They will lie through their teeth. They will cut you off after putting you on hold for 20 minutes.
They have over charged my 3 times on my bill for no reason. When I ordered a nano sim, they charged me £8 dpd delivery when I didn't even ask for it. I'm now in the process of trying to unlock my old iPhone 4. Its been a week and they said it would take 2 days. Each time I phone, they promise to chase it up and I will be contacted in 48 hours. I never get a response.
They also put their prices up every year. Which is a joke.
I have just moved to three. I moved my wife as well. The cost of two contacts with three is the same as my old contract with ee. And we both get a lot more with three.
I was concerned about coverage with three but so far it's been on par, if not better then ee.
The thing is. This is just my experience. Had I have not had any problems I would say ee was ok.
You just got to hope nothing goes wrong.