I am Using Vodafone Number since 4 years. believe me its a best network in india.
if you are going any hill station or village than please keep vodafone network number. trust me if you are not keeping this you would be in trouble for calling / internet . so please keep vodafone for keep your cantact basic with your family/friends/ etc. vodafone is the only one compnay thaey had good service / they have good service and I am sure the would have good service for people . internet is superb from vodafone / call rates are good for all / and vodafone have the ability for giving you best service .
be vodafone and safety in future