Nord QC Bouman
I shoot sabots and the biggest reason for me is "Time in Flight," Velocity and flatter shooting is really important. I feel I can develope greater velocities, flatter shooting, ft. pounds of energy more quickly over a greater range.
My personal opinion is that Power Belts would be down my list of alternatives. The only positive I can think of is that they ARE easy loading. They did not give me the performance on animals that I expected or wanted. On paper they worked great.
And as cayugad noted there really isn't a lot wrong with conicals - if you like them. There are a lot of ML people using them and there is a lot of people that feel bigger heavier sloweris better. It is just hard to convert an old 270 shooter to bigger heavier slower.
Hope you find your answers...