Hi a bit of a delayed response here (ive been in hospital) but I use Xenodream fairly extensively its fair to say, and I trialled UF. I must be a right brained person cos I just could not get into UF (or Bryce for that matter) but XD is sooooooooooo me! I have also used Sterling and QSFlame - two more different and free programs. Sterling makes classic type fractals similar to UF but without the layering and colouring options and cool stuffs. QSFlame makes flame type fractals which are swirly stripes of colour arranged in diff ways as far as I can tell, a bit limited in scope but pretty to look at. I would love to get my hands on FraxFlame cos it looks more in depth. Anyway you can see some beginner examples of all the ones ive mentioned here: http://www.geocities.com/terragenblue and go to the Fractal Gallery. There are links to where you can find them on my links page. HTH