I'm in the same boat on the CGE/SDCC issue. I had been planning on attending both, but now I have to decide between the two. Not really a fun decision when you get right down to it. I really think that there are a ton of people that would have attended both, but given how difficult it is to secure a room for SDCC those people are most likely somewhat committed to going to SDCC due to booking a place to stay in the past few months (pretty much required from what I understand).

I wish there was a way to make this work, even moving CGE a week forward or back, but I doubt it's possible at this point.