I thought Barbosa was supposed to be the second coming of Gary Payton?
Barbosa's more of a scoring lead guard than a PG, so in that way he's a lot like Delk. However, he's longer than Delk is, and quicker than Bobby Jackson, and less experienced than either of them were on their very first days in the NBA. I'm not ready to move him along just yet.
I think everybody agrees that, in the near future at least, Barbosa is best suited to be the Suns' third guard. The Suns weren't able to make that work with Delk, but the Kings and Mavericks have shown other teams how to make it work, and I hope (thanks to D'Antoni) the Suns offense of the future will look more like those teams than the Tony Delk Suns teams.
If that's what happens, everything works out well enough, because it opens the starting PG spot for Vujanic. If Vujanic isn't all that, then the Suns will have another high draft pick in the 2005 draft to pick his replacement.
I still think Chris Duhon is going to make somebody a decent pass-first PG someday, but the Suns probably won't have a draft pick low enough to take him. I guess they can trade down if they get stiffed by Vujanic and PG is what they need.