Quality of new (say 99 or better) 20 and 21 hulls

[Ikan Besar]

I've owned two Potter era boats (a '71 and a '77) and would have few if any reservations about owning a new one.

As Scott mentioned, there is a very big difference between the 20' and 21'. On a rough day you would really be happier in a 21'. Whereas towing and propelling a 20' would be easier/cheaper.

There aren't that many things, if any, that would need to be changed on the new ones. They are still tail-heavy boats so if it really is a toss-up for you between the 20/21', the 21' will definitely bail better.