olli - I have SEP and ColorEfexBill, I was specifically looking at how they convert for particular film types since it provided a point of comparison. In a sense the X-Equals result is the LR result since it's effectively an LR preset which is then tweaked using the LR auto adjust for exposure.
Karen, it's not lightnig fast but I've never found it a problem. Maybe you should try reinstalling in case there's a problem with it?
I downloaded the trial and will test it this weekend. It looks promising but not to compare with SEP2. I'm trying to keep a open mind when I test it...I see that DXO is advertising some new software with many different film effects. Has anyone used this yet?