Those points seem entirely valid: the Pitts and the Yak don't seem directly comparable. I was very interested in a Yak for a while, for all the reasons mentioned here and in the magazine articles, but have gone for a Cap 10b instead, which is another option worth checking out if forming an aeros- oriented group. Expensive to buy but not so costly to run. Tony Bianchi had one for sale at Wycombe recently.