handcent is essentially the samething as chompsms but there are more features to it like [[sms popup, delivery reports, alerts you when you are on the phone, alerts if you have a message and you didn't check it in a certain amount of time then it will alert you again, etc..]] i used it and i thought it was an awesome app but i'm currently using chomp. they're are both really great apps. i'm sure which ever you pick will be good.