TicketNetwork.com is a pretty awesome site. Whenever I'm looking for hard to find tickets to a special event or just looking for something to do on a random weekend I always start here and usually find exactly what I'm looking for and at the RIGHT PRICE! I've never had an issue with delivery or redeeming tickets.
I also travel alot so am often looking for tickets to events in other cities... never had a problem! Try ticketnetwork first!