From what I understand the WW plans are the old Paul Busick plans. I heard that WW bought the rights to Paul's plans and boat. I think there "Erie" bought is the old Busick. I've never used Paul's plans but remember folks saying they were good.
I did use marshmonster's plans and there were several things off on them. MM was a lot of help BEFORE I bought the plans, answering all my emails promptly. When I ran into discrepencies with the plans he never answered any of those emails.
I would go with the WW plans, although with the economy if you look around I'm sure you will be finding commercial boats going for about the same as what it will cost you to build one, plus the commercial boats will be lighter. I recently saw a MLB classic go for $600.
good luck,
Dave B