Unfortunately most inflatables are like trying to paddle a inter tube.
Bic makes a new one that has a ridged bottom section. I think they are in the $700 to $1000 range. Bic also makes a foldable one.
My friend has a Folbot that he absolutely loves, he can fit it in his motorcycle trailer along with enough stuff for a weeks worth of camping.
I have a Perception Patriot 12' Kayak, great kayak but the seat gets to me after a few hours.
Check out Bic kayaks