RXT would be my choice
Ok, you are on the fence between a two seater or a three seater; My choice is the three seater. Simply because it is a more utilitarian, If you want to tow tubes and knee boards you have to be able to carry three passengers. They also ride better.
The RXT has a boarding ladder, which I find very helpful in boarding in deep water. Long story short, the RXT will give you more options of useage.