Personally I hate any speaker with amps inside it.
But what's your reason for "thinking" about powered speakers and then deciding on passive speakers?
Is it cost?
Or is it brand name since I've never even heard of the brand "Kali"?
Or is it that you can buy the Kali at Guitar Center and other PRO stores, which makes it seem like a "Pro" type speaker?
Or is it the thought that maybe the amp inside the Kali will die one day?