Well, at this point, the PE is the only one "somewhat" available. The regular XT, runs a tad slower clockwise, but otherwise is the same thing. The price difference between the 2 would be the biggest factor. If you can get the PE for a few bucks more, I'd go with that. If its like $100 difference, I'd go with the XT. However, I haven't seen anything on the XT being available anytime soon.
any links or benchmarks to back that? I trust what your saying and thought the same thing befor hand but would like to see exact differences, also im not going to be getting one for a few more months so availibility and current cost differences arent really weighting in on my mind set yet.