I bought Creator 2011 Pro and am happy with the results of my tests....heres some brief comments
1. MyDVD crashing while creating some AVCHD files...Project_BuildToDevice...
...doesn't seem to be a problem any more....Creator 2011 Pro installed cleanly and has yet to crash
2. Jumpy Blu-ray and AVCHD files when certain types of HD video clips are included in the video
....doesn't seem to be a problem any more....Videowave accepts images and H.264 (1080) clips, MyDVD generates AVCHD and Blu-ray directories correctly, directly from the Videowave DMSM file...no requirement intermediate MPG files...therefore great looking 1080 output
3. Not being able to add audio files to create audio CDs
....doesn't seem to be a problem any more....this works now....I'm able to add MP3 files to create audio CDs
4. Inconsistant use of ATI GPUs for encoding acceleration
....doesn't seem to be a problem any more....seems to use both GPU and CPU for encoding 1080 AVCHD and Blu-ray files. Really fast encoding (I have a one year old computer with an I7 CPU, 8 megs and ATI video card)
5. Pan/Zoom on MP4 video clips causing Creator to crash
....doesn't seem to be a problem any more....pan/zoom works on my video clips
6. Integrating Photoshow with Videostudio
....doesn't seem to be a problem any more....within Videowave you can choose new Cinemagic Production and New Slideshow to help generate basic but useable Videowave productions
I also used to have a problem in not knowing the resulting resolution of MyDVD AVCHD and Blu-ray files until after they were rendered ...the resolution of these files became the same resolution as the video clips lowest resolution in the Videowave production. MyDVD still works the same way but tells you in advance what the final resolution will be.
I recommend buying Creator 2011 if you bought Creator 2010 and had these problems. However (on the Video and Photo side), other than the new 3D, streaming and stablization capabilites there seems to be very little else thats new over Creator 2010. I don't use Creator for data-related functions such as backup so didn't look at these functions.