Hi Karw, I haven't done the comparisons you have and don't have a lot of feedback for you. I use mostly ishares and have used the global sector funds a lot. At one point there was some concern (perhaps a rumor) about ETF's oversaturating the market and some closing. Also there is the liquidity problem. So I used ishares which are very popular. I haven't heard any more about ETF's closing. I really like Wisdom Tree with their dividend approach and will certainly use those funds when they are more popular.
I have several funds, many underwater, that I plan to close in the future and shift the funds into other sectors. I now own several commodity funds- gold, oil, steel, and commodities. I am finding it easier emotionally to make changes gradually. I appreciate hearing from people who have used AIM for awhile. Let us know what choices you make. Cindy