Welcome Joe!
You are looking at some big man kayaks. Are you a big guy? I just ask because both Malibu, and Cobra make smaller beamed, and faster kayaks, ala X-13, and Marauder respectively.
One thing you can learn is stability, but never gain speed. I am not knocking those models, plenty of people are perfectly happy paddling those, and caught plenty of BIG
Just offering my perspective on a paddling, I believe you can demo kayaks at OEX, and other shops to find the right one for you.
hope this helps,
chris