The VTX is a nice boat for sure. I love the way it handles/drives, and it's probably the best crossover of the bunch. Indeed I came very close to buying that boat TWICE.
What killed it for me both times was such a tiny interior on a boat that takes up so much garage space. It's deceiving. It may be a 20' boat, but in your garage it's more like a 22' boat with the massive power wedge protruding out the back. Even with the wedge down the bracket sticks out 18". So if your 20' restriction is based on a garage limitation, the VTX is not for you. My 21' MB is tons bigger inside, and takes up less garage space than the 20' VTX.