I had a pro for about 9 months and enjoyed it while I had it. If space wasn't limited I would have kept it, as it is a well put together package. It is one of the prettiest Sterns (especially the later runs with a silk-screened cabinet) and has phenomenal music and sounds.
Unless the Tron films are a giant thing to you, there are many games with a very similar layout that can be had for less. Funhouse, JP, Frankenstein etc. Frankenstein is a favorite of mine and I found I enjoyed it much more than Tron, which is why I let Tron go for a game with a very different layout (Avengers).