I certainly cant say which is BETTER than the other(s)...but Im going with 2400 to do my loads in .44Mag. One of the main reasons and I lean this way with all of Allient ( now) powders is the gap between starting loads and MAX loads. This kind of alludes to a different thread that gives RCBS powder measures holy heck. (RCBS Uniflow)

Example. For a 240 gr lead slug in 44...the max load ( from data sources ) is 20.6 gr which would give me 1510 FPS. STARTING charge is 18.5 gr. Thats a LOT of leeway to get just what feels good to me...and would allow the slug I was using to perform properly. Lots of powders dont have that much.