Just upgraded to pro 3, and tried out a few plugins in motion 5. Fantastic! Speed drop was hardly noticeable and it was great to be able to work in my (at the moment anyway ;-) ) preferred editor with the plugins.
Downloading the new software was a breeze, and only took 37 minutes.
Thank you guys!
Off topic tip: for a stylised lightning look, I turned off core and used the glow as the 'core' by adjusting the settings to make it almost solid. Created a nice broken look to the Lightning.