Oh and just to touch lightly (not like that!) on a subject;

Primus and the Quints - I took it that yes the Quintessons did create the Transformers. Probably chose cybertron in the first place as it may have resembled their home planet at the time they discovered it or may have been detected as a massive power source, hence why they were always so desperate to recover the planet. However it was Primus that gave them life, turned them into more than just machines, gave them their 'spark.' The Quints just provided the body's and gave them knowledge