Thus far, I'm liking the overall feel and responsiveness of the 64 bit version. (running 12gig/ram). I guess it's what your looking for and where your concentrated areas of use are found. I like the web publishing and see improved output compared to posting a web friendly pdf. I'm still playing around with the masking stuff. I've gotten proficient enough with the drawing tools that it's almost easier to make your mask using them than fooling around with erasing. We'll see how it goes as I get a little deeper.