How good are Speck iPhone cases?

I used to have an otter box case because i'm ALWAYS dropping my iPhone. But through constantly taking of the otter box (to get it to fit on my radio dock) it began to fall apart, and it was always just plain ugly.
I just got a speck case, but it's so small. I drop my phone a lot, and I'm worried this isn't enough protection. Does anyone else have a speck case? Is it good enough protection for being dropped onto concrete and what not?

I had a speck case that was plaid for my iPhone 4, I did not break my phone when it was dropped with this case, however it will not provide as much protection as an otter box, but i doubt you will need the extra protection for regular use unless you are doing something where your iphone is likely to be dropped far.