Well I was gonna reply yesterday but held off since you asked to hear from those that own a Prevo or a KA & I've owned neither. ;) You didn't mention a budget & the two products you mention are not similarly priced. If the budget allows for a Prevo with four slides you are golden and you would have the finest available. IMO if the budget dictated older units with no slides, even one or two, I'd be back in the KA camp. This is of course coming from someone that puts more emphasis on enjoying the coach while camping rather than the driving experience.