Doh. Don't everyone stay home from work answering my inquiry. Right
after I posted, I noticed the search feature at the top of the page and
have plenty to read......unless you'd like to add something. I'm kind
of leaning toward the M-20. According to their site, the rest are
charlatans and their's is the only worthwhile one. But I guess my only
STC's choices are it and the Walker.Airwolf.