Not to sound pompous or anything , but iSpeed doesn't sound very original or all that cool to me , eh , might just be because i've never really fancied names with i's , x's and even o's in front of them , despite the fact that my name previously began and ended with an o.
But if you're comfortable with the new name , then good job ;) , if you like it that's the best thing , considering it's your account.