i was all about p5 and i would install then remove D|S because i didnt really care for it until i starting really using it. and yes, there are major differences but as i stated before, once i became used to D|S, poser5 has remained inert on my system. i have experienced the hair thing with aiko 3 but all i would do is delete it, make sure the head is selected and insert it back into the scene (if it wasnt conforming hair) and it fit right on her. also, the render engine (for me) works so much faster in D|S and the 3d space controls seem more natural to me than the P5 tools. my only real complain with D|S is the lighting system and i cannot say that is a problem with the system but rather with myself. p5 has an easier lighting setup - click and go - but D|S doesnt always seem to work the same so going from poser to studio, there is a curve with the lighting. im hoping, as D|S gains popularity, that more people will put out free lights as I hate messing with it! other than that, i havent run into the bugs that other people have. it perfoms consistently for me and i like the library selection a lot more than p5. i always feel like im clicking a million times just to get to the props from the figures. i think D|S makes better usage if desktop space although it doesnt slow when using multiple view panels. i like D|S more than poser but it just feels right for me, for some reason. i am willing to put up with the bugs in this beta D|S than the bugs in version 5 of poser. each has its strengths - im not anti p5 despite how this sounds - but i just like D|S.