Harmy:

I was going to suggest you download the trial version of CS5 or CS 5.5, so I'm sorry to hear that it won't work on your system. We're in the process of upgrading all of our plugins to 64 bit on our Mac Pro systems.

At this point it's hard to tell how much of a time-saver rotobrush would be. There is a bit of a learning curve with it, and I don't know how well it would handle complex scenes. I'm not super-busy with client work at the moment, so if you'd like me to do a rotobrush test on a shot let me know. I could tell you how long it took, and you could compare that to how long it took you to roto the shot by hand.

For what it's worth, After Effects really hasn't changed much over the years. I've been using it since around 1997. You still have a comp window and timeline, the same basic layout and tools. Most of the later iterations are enhancements, not major rewrites.

Keep up the good work.

Shawn