The Pre is almost certainly going to be the best smartphone available from a technical/feature point of view, but it still won't have the desirability factor that Apple have managed to build up so carefully for their products over the years.
I'm finding the Pre incredibly desirable. It looks good, it looks fast, it looks smooth.
And most importantly, hardly anyone else will have one because the vast majority have locked themselves into an iPhone contract. Now THAT's desirability!