My favorite MX switch is MX red, too and I have a Realforce 88u 45g... I, for one, don't think the Topre 45g is noticeably heavier than MX reds, at all. They are pretty similar in force actually. I bottom out pretty hard on both, so that might be part of the reason why, but when I gently tap on my Realforce, I think they feel pretty damn light. 30g would be way, way, waaay too light for me.