Whats the current status on the purchases? And, how high priced was the Tron?
The reason you should have gone with Tron would be definately the fact that it holds its value and well.....you see the response the people here(those knowledgeable about arcades) had when Tron was mentioned.
I would have said try for the Operation Wolf, as well. Classic shooter. The seller had a reeeeal nice collection in his hands.