Although the group buy is down to $119 (4297 people) I decided not to join.
I had a run through the demo, trying most modules on various projects. Although I did like the idea to have plugs with only a few knobs for special purposes, the actual quality of the plugs cannot compete with my already available selection of FX. I did notice some bugs (a critical one in the stereolizer where L and R appear swapped) and encoutered distortion where I wouldn't expect it. The presets all work fine, so sound really good, but when dialing your own settings, you're sometimes quickly overloading the plug, resulting in sound deterioration and distortion ... and many plugs lack the ability to adjust IN and OUT levels (!!!) which in my opinion should be the common denominator of all these plugs (sort of the base class functionality in developer's speak) ...
Anyway, if some one knows alternatives i.e. interesting plugs with features not available in Sonar stock plugs and having only a few knobs, pleas let me know.