My experience with 100bestbuy.com has been amazing. I simply love the service these guys provide. Great customer service, never had any issues with 100 bestbuy. com However recently I bought my Galaxy S2 only to find out that it was 2k more expensive on here. I think there is an extent I would pay extra but at some point price starts to matter. In my free time I decided to hack up a site that can compare prices and gave access to my friends. They are kind of liking it already.
I still think 100best buy is the next amazon but it doesn’t hurt to check the prices on other sites as well.