Best network provider in the UK?

Hello everyone,
I will review the top 4 networks providers in the uk. Give you my honest opinion on which each of these network offers in terms of quality,products and services.

t-mobile/ee
T-Mobile is the most reliable networks in the uk and provides great 3G and 2G coverage.

I have been using t-mobile over 7 years and i can tell you the quality of the network is improving and introducing some new bundles like smart packs to offer bundles of minutes,data and text for a fixed amount.

Incentives/benefits
The great thing about t-mobile is the quality of service they provide to users.
Even though t-mobile doesn't offer loyalty program like o2 rewards or vodafone own freebie rewards in this case I can ignore that part and just concentrate on their services and products they offer customers.

Customer service 
Another major factor when choosing a network provider. I haven't had any major problems with t-mobile so far other than some minor problems. Whenever i had a query or questions about any of their services t-mobile customer service team was helpful and quite useful in some ways.

Coverage
It covers most of the region including small rural areas where t-mobile just works fine. In terms of coverage I would say 96% that's nearly more than half of the uk population.

Vodafone
Vodafone its good but it's coverage is not as strong as t-mobile.
In small rural areas this is where vodafone lacks 3G and 2G connection. A Job t-mobile does very well especially on small cities and areas where network coverage is all time low.

Incentives/benefits
What appealed to me about vodafone is its rewards program called vodafone freebie rewards. The freebie rewards program gives users points everything you top up. Once you have collected enough freebie points you can redeem for a range of rewards. The programme is kind of similar to tesco clubcard but you can only collect points on top ups.

Coverage
I've used vodafone frequently on many different areas. What I noticed the most 3G works better in popular areas like London, Manchester, Newcastle and Leeds.
As I mentioned before its coverage is not strong as t-mobile but I would say 3G works maybe 80-85%. If I'm in a area where network coverage is all time low 2G doesn't even work I can't even make emergency calls in rural areas something t-mobile does better job at.
Hopefully vodafone will work on small areas where coverage is poor and needs a good makeover.

o2
In recent years o2 service has gotten worse and worse which led me to leave o2 and try a network who are able to deliver good quality products and who actually cares about it's users.

Incentives/benefits
o2 has its own loyalty program like any other networks. o2 rewards. How it works is you get 10% of your top ups every 3 months. You can either exchange your o2 rewards for top up credit or money off a new phone.

Customer service 
one of the mains reasons why I left o2.my experience was so bad there's not enough words to describe how i feel about them.

Coverage
Covers all areas of the uk.

Virgin Mobile 
Probably one of the most least wanted networks in the uk. Poor products, poor customer service. It just doesn't match up to the quality offered by bigger networks like t-mobile and vodafone.

Incentives/benefits 
None. In my experience it's not worth the time looking at Virgin Mobile.

Customer service 
Absolutely rubbish. Lack of knowledge about their own products and services.

Coverage
Virgin Mobile uses EE network to provide coverage.

Hopefully you get an idea of how these networks works, their benefits of being with them and who should you really avoid? (Virgin Mobile)