Your comment about the IC being double than the Sheraton surprised me as it used to be only slightly more. So I checked a couple of dates for this year, and they raised their prices substantially.

I booked last year at 120/night and now the lowest price is 163 for a king. If you intend to use the many hotel facilities, then it's still worth it. Hugh pool, tennis, health club, lounges, etc. Because of the upgrade I'll get, I'm definitely going back to the IC. The junior suite is slightly nicer than the junior suite I had 2 weeks ago at the Baltimore IC.