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I use the Barnes and am very impressed with them. I have read good reports on the others also and I plan to try them but havn't yet.

In my Navy Arms .50 the 295 grain Powerbelts are fantastic. It is a 1 in 28" twist and the Powerbelts give awsome groups. Last year I couldn't get groups under 5" at 100 yards using several off the rack sabot/bullet combos. The powerbelts ended my grouping problems.
I have not tried the others you mentioned.

Well it all depends on what rifle you are shooting and what groups best in your gun. If you are shooting black powder or pyrodex then I would strongly suggest the Barnes if your rifle will group them well. They are AWSOME on game! Very reliable expansion. If you have a Savage and are shooting smokeless powder, then the other jacketed bullets will serve you well.