Vandersteen 2CE sig II first run or current?....

I am interested in purchasing a pair of vandersteen model 2CE sig II speakers, but am I curious to know if there is a difference in sound quality between the first run (about 4years ago) model 2 sig and the current one. Its no surprise that Richard Vandersteen make minor changes to his speakers without publicizing it. Also, I remember when the new 2 sig came out its midrange did not blend very well with the rest of the speaker, so basically I would like to know if it now sounds better?

Thanks,