I bought a 2007 14" Vanguard 4 years ago. Since then, I have run all types of water (Big & Boney). Both day trips and multi-day fully loaded. I really like how the boat performs and tracks and am beyond HAPPY and would buy it again.
Honestly, I'd give Holly a call at Vanguard. When I was looking to buy, I gave her a call and she really explained some of the details of how she designed her boat.
I'd be happy to chat it up too. Just PM me.