Thiel CS3.7 and CS2.4 comparisons?

Has anyone compared these two speakers? I have auditioned the 3.7s a number of times and really liked them. But I never bought them for financial reasons over the last year...

Specifically I would like to know how vocals on the CS2.4s compare. But any information on them would be helpful.

My room is 12X20X8 and the CS2.4 might be a better fit anyway. I am looking at other speakers too but would like to keep the thread to just these two speakers.

Thanks,
James.