most chennai'tes switch between cards once in 6months-12months unless its for office purposes,coz the plans and rate dominate the scene.
hutch was all goodie till recentl,now aircel as nice offers ,but consideing hutch has bought aircel,donno the future since they ve come with unbelievable ,good offers so ddont know how long they'll last or give the offer.as for hutch im sure they'll come back with more offers when they konw thyre loosing out on the market off late.they're one of the quickest to get started with thugh.
prepaid desnt require much f a starting/registration procedure compared to post paid. butthey still expect some photo id or something with the chennai address on it.
airtel,i wundt know ,but as said^ lot of dedicated users,nohting fancy i think,good coverage,blh balh.