Bear72,
If your question is serious[not just a 'stir it up' hypothetical], and
If you are looking for unbiased answers, and
If you are wanting someone speaking from experience ("on point" with what you are specifically asked for) rather than emotion,

Then I would encourage you to locate individuals who have a rack of rifles that spans those cartridges (and preferrably includes 7mm ultra mag and 8mm Rem mag, and 338 Win mag) and then glean information from them. Your total number of "inputs" will be much less but much more relevant as issues such as: caliber spacing within what may become your future rack of rifles, trade offs between larger and medium and smaller calibers, recoil, muzzle blast, weight, hunting styles, amount and type of practicing you do can be discussed rationally. Otherwise the mainstay rifle that most folks hang their hat on and the pride associated with it begins to interfere and the "chat room" factor can run rather high.

Consider surfing the threads here and email the players you consider relevent and arrange a phone conversation.

Good luck and by the way, my compliments - those are some fine cartridges.

Never Undergunned,
EKM



Good judgment comes from bad experience! Half of elk hunting is knowing what NOT to do!