904 Steel Planetary Upgrade

Can anyone expound on strut lever selection? It seems that higher numerical leverage hold the band tighter at the same given fluid pressure. Does this make shifts into second crisper, or even harsh, up and down? I can't seem to find a lot of discussion about it, such as, is stock not really enough for any hi-po application, or are they not really needed unless bracket racing?? Also, 904 and 727 behave pretty much the same (regarding selection), or totally different animals? TIA, Lefty71