Looks like a lot of people on BBC with the 21 footers using the 26 or 27 Trophy's.
It's hard to say what the best average prop is I guess. So many people getting decent results with a wide range of setups. I have a feeling the Trophy's are being used a lot simply because dealers stock them extensively.
I think I'll give the folks at Hydromotive a buzz and see what they've been recommending for the 21' Bullets w/ 250 Horse motors. So far I'm liking what I'm hearing about the Quad - 4 props.

Thanks