Oh, my you've just asked about the biggest question! You say noone replies to this question. The reason why is that there is no one suspension/engine/ect that is better than any other. This is because in engineering many times comprimises are made. Price versus performance is the most common comprimise. One cannot sell a carbon-fiber chassis, V-12 engined, pushrod suspension car for 12,000$. No one type of part is better, just for a lower cost, easier availability, or is more relaible. I hope this answers your question.