X20 accessories

I also thank you very much Gaijin!  There's been many times when I would have liked to take vertical shots using bounce flash but my old Olympus FL-36 couldn't do it … it only has a tilted head.  The more I read about it with comments and youtube videos the more interested I am in purchasing the EF42 for the X20.  It would be interesting to compare the two flash units as far as the light output / reach.