cheep and best cell phone for internet connectivity

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hi mylot friends, actually this discussion may be posted by me after two months,but due to net problem ,my mylot friends are worry about my where abouts,so i am posting this discussion,in the month of January 2011 or by the end of December 2010 i wish to purchase a cheep and best cell phone for mobile internet use with small key board also, battery back must for internet phones,most of the mylot friends are using internet on their phone,so let me know which is preferable?