bought it too. its very very cool. thx very much for it. and its totally worth the money !!!
one thing that could be improved in my opinion is that (thats how i see it) even if i make a very small change in one of the many parameters everything is calculated again from start and the result will vary very much from the origin.
Would it be possible to implement in future versions to only recalculate the changed parameter ?
or do i see this completely wrong ? (sorry i am a noob 
)
best regards
stucki