I was in your exact same situation about 30 days ago. I had the 683's for 18 months and after hearing joe bonamassa live and then listening to his dvd and wondering where the sounds went, I decided to go on the hunt.
My first stop was my local av store where they had the CM8's. They sounded really nice but was missing the low..
The sales guy convinced me to order the CM9's and for about 3000 i placed the order.
I am kinda like you, want to do the proper due diligence to make sure im in the right spot with my money. After reading posts on avsforum, I came across Salk Speakers.
I have to be honest, I really liked the feedback I got from literally everything I read. I had additional questions though... so I called the number on website...guess who answered.... Jim him self... the owner and maker... how's that for service!
After spending the next two days bound and determined to find anyone that spoke negatively about their salk speakers, I NEVER FOUND ANYONE.
I decided to cancel my CM9 order and make investment and for roughly 1200 more, ordered the HT2-tl's. Im taking a chance as I have not heard them before but when you read the expertise of the folks that love their speakers, my novice ears will certainly be pleased.
I cant wait to get mine! About the middle of may i guess so if you want to wait, I will let you know...
Spinerep