Thank you fiddlewood, it is intriguing the different things you read online about sound quality and modifications you can make.
I didn't know there was even thick & thin types, that is interesting.
I did know there was reduced height bridges to bring the strings closer to the frets, hmmm not sure why?
I have read that the compensated bridge is especially useful when you play more 'up the neck' tunes, supposed to help making the notes ring out more??
I am considering the bridge with the bone inserts as it is reported to reduce a little string buzz and that would help me because I use steel picks including the thumb pick and can hear the pick strike and buzz when I play. Not sure if anyone else can:-)
On another subject I came across a video of teacher Ron Stewart who describes pressing down hard on the skin or lightening the pressure on the skin effects the tone. I have been trying this but I cannot hear a difference.