I have done some not very scientific but still valid CPU usage tests on these two plugins. I have a good but somewhat aging PC (i7 4th generation) and unfortunately can't afford having new versions of plugins that grab much more CPU than the previous version. So, for me and for you if you need plugins to be easy on your CPU, we can choose which version we want to use. Depends if things in the release notes of the latest version are a requirement for you usage or not. Amplitube 5 - v5.0.3 an