HP is HP, more is good. Personally I have always liked more rpms. The low end on the BB is similar to the SB pipes, so why wouldnt you want to run the pipes that make more power? As long as you gear and clutch it correctly, it will run faster. Your never going to launch a Banshee at anything less than full throttle anyways, so low end isnt as much of an issue. Also remember that a pipe with more overrev will be a little more forgiving if you miss the shift on the high side a bit. The 10mil will have enough ooommmpphhh to pull it out. Just my .02BB Shearer's made a best of 103 hp (with Lectrons) @ 9000 rpm, with no overrev whatsoever. SBs made 103 (with Lectrons)@9600 rpms with good overrev. BBs had a little better power at lower RPMS, not a good broad curve that I thought the BBs produced.
We ended up getting 109 hp out of the SBs with some different carbs, but never tried the BBs with them.
So, is it better (in 300ft) to have a motor that makes 103hp @9000 or 9700? Or does it even matter as long as its geared accordingly? The motor should (and did) make peak power quicker (i.e. reach 9000 rpms quicker) with the BBs for sure, as the SBs had to rev out to 9600 rpms.
I plan on getting more HP out of this motor, but for now I have to run it for what it is.