Sure, wait until Morion 4, if you don't want to take advantage of this amazing program.
How may peoplr take the time to post about their successes with an application? Most of those who are dealing with issues are those on G5's with an inferior video card. In Motion - the video card is EVERYTHING!
I run Motion 1.01 on a dual 1.0 GHz G4 with an ATI 9800 Pro Mac Edition AGP 4x video card and Motion is very fast and unless you load it up with 20 or more layers, it works for me.