I just got back from the Philly VGXPO, and wanted to put in my two cents about the show. Let me preface my review by stating I've never been to PhillyClassic, so I can't compare.
First of all, Atariage had its latest games, including a few not yet released, running on several monitors. It was great to be able to play these games before purchasing. Speaking of purchasing, Albert (whom I had the pleasure of meeting for the first time) had a very organized and well-laid-out sales table. In fact, I'd say Atariage was the most organized and interesting game vendor at the show.
As for the rest of the show, there were plenty of used games to be had for all systems. The few carts I looked at were reasonably priced. No great deals, but no ripoffs, either.
There were lots of classic arcade games, although it seemed some required tokens while others did not. I only played Defender and Gorf, which were both free.
That's about it from me. Again, I've never been to any other classic gaming convention, so I have nothing to which I can compare this event. Maybe some of the PhillyClassic veterans will have a different take.
P.S. -- Can't wait to get my hands on Man Goes Down, Reflex and Bolderdash -- hopefully they'll be ready for Christmas!