Which single plane intake?

I like the Holley strip Dominator better than the M1. The holley has a much better port roof at the carb pad the way it comes from holley. The M1 has a 'corner' that needs to be radiused before it should be used. With a nice gentle smooth radius on the port roof at the carb pad it is as good as the strip dominator. I believe the strip dominator was the inspiration for the M1. They are too similar in design, shape and size (volume). JMHO
Terry