in my experience the throttling is so bad that once you've used your 5gb there's no point in even having a data connection anymore. you're barely hitting EDGE speeds which on today's tubes isn't enough to load an average website
I bought one and then returned it based on some anti-consumer practices they were doing around launch time last year. Not sure if they cleaned themselves up. Things like hidden opt-in upsells, random charges, etc.
edit: And the big problem is that its on Sprints CDMA network, which is ass in large swaths of the US.
I'm contract from TMobile bit all of a sudden I'm not eligible for a free phone upgrade even though I should be... They want to charge me full price or give me a phone much worse than my 3 year old one.