Well it is indeed a Prostar 205v. Up until 2002 the 205v was Mastercrafts X-star. In 2003 the 205v became the X-2. Many people like the graphics package of the traditional 205v and then add an sticker to it that identifies it as an X-Series boat. The 205v is also known as the 1999-2002 X-Star, the 2003-2005 X-2 & 2006-2008(?) X-1. They are all the same hull with varying towers/options etc.
All this being said, they are widely known to produce one of the best wakeboard wakes ever!!! If its a good price, has reasonable hours & you like it, jump on it. They are incredible wake makers and my only negative is that they are relatively small boats if you have a large crew.