I've been using ST's since the early 90's, nothing prior. I've been flying since about '92.

I've had O.S., Webra's, T.Tiger's,Magnum's, H.P.'s and others but my favorite all time has been the ST's. Tremendous high's, good idles, midrange is good as well. I've never been an expert at tuning engines so I stuck with what I knew worked for me.

The last time I flew at the field someone commented how my .40ST ran stronger than their .46OS. ???