Very good choice with the Simaudio I-3. I've heard it matched with several different JMlab speakers and it sounded great everytime. If the JMlab Cobalt 826's are too big have you looked at the 816's? Do you definetly want floorstanders or are you will to go with very good bookself speakers? For $2000 you could go with the JMlab Electra 906's, which I would highly recomend. The magazine Absolute Sound just put the 906's on their front cover and had a very good review of them. Well worth the read if you can get a copy of it. I beleive it is on their website.
Good Luck,
Brandon
Good Luck,
Brandon