Best place to buy discounted WDW tickets

[mkaccountant]

We are less than 20 days from departure to WDW. I still need to purchase tickets as we used a discount on the resort and are buying tickets separately to save $$. I wanted to check to see which online ticketing sites are the best. Best prices, best services, etc. I definitely don't want to fork out over $700 and not get tickets. We will be doing 5 days at WDW and 2 at Universal. No hopper is needed at either place and just two adults.

So far www.officialticketcenter.com has been the cheapest. Does anyone have any experience with this site? Are there any better?

TIA