gwunder Hi Greg, for my weight the 140/8.4 is perfect, cpl years ago I was using the 9.0 too...I think you could go for 8.4 actually, or 7.7 - both work on the 140 and it's just a question of how much more than 18knots you want to go to. I guess with your weight/7.7, you'll be fine from 18-25knots approx, whilst the 8.4 will go earlier, but then also reach a bit of a max sooner or later?