what are the good points and the bad trips with acid?

I might just get this program but am unsure right now.

It is a single thread beast with dominate control over the other three threads on my machine...I can't do things in multitask form that I hope will be solved soon...I am still running acid 8.0 studio like I was in july 2010 does anything really change..

I have grown to respect acid and it is growing up in a corner of my mind for starters the acid planet forum is kinda dull but gets hits now and then...