I respect patrickt's experienced opinion on preferring the vac sec. for the street. I've had both and other than utmost efficiency in smoothness, i like the mechanical. I'm more in line with having the feel and control at my fingertips or foot, I know exactly when the secondaries are cracked, I can feel it as well as hear it, I can control it. Just like I would not put an auto in my car or soft body mounts, or power steering, or engine mounts, my car is all about, sound, feel and quick action. It's personal I know, but I did not feel any disadvantage at all going to mechanical. It keeps me busy
These cars can be a handful or a footfull, it's the way I like it