I would be happy to talk to you a bit if you are interested in a raid teams perspective. I moved our raid team to CTR about 6 months ago. Jfalcon#1108 on battle.net is the best way to reach me. I may not be the right person to talk about all the pros and cons, i don't play the AH game for example, but i can tell you about my experience. Just for full disclosure, i am just a CTR member, not an officer or in any way involved in guild leadership.
Tanking isn't just something I do, It's who I am!