I actually like the 284 Win cartridge the best, but with cases outrageously priced and hard to find, I'll pass.
I really like the balance of caliber, weight, and very high BCs of the 7mm. Hunting mostly in the Hill Country of Texas, I had leaned more towards the 7mm-08. But really desired to move to northern New Mexico, and have talked it over w/ girlfriend who's ready to leave. Now my range can considerably change. Not to mention the high winds I noticed so much there, as well as in northern Arizona, which was cool too.
Considering 7mm's from the -08 to Rem Mag in an Encore, and looking at it from the cost perspective as well, and the 280 seems to make the most sense.
I had wondered about Sierra's sight giving an aray of BCs for their bullets.
With the wind being my main concern, as I am not skilled in wind speed judgement, but understand the trajectory well enough, and can judge the distance fairly well out to 250-300 yds, I opt for the higher BCs.
I would give more on the group size for better wind resistance, and am beginning with the SST and trying the BT and BST, as well as the AT. But because I can get (assuming they perform the same) the IB and AB with identical BCs I lean towards them. I'd be OK with a 4" @ 300 yds with an interchangeable level bullet than to switch to something that varies widely @ 400 yds but groups better, and that goes another 4" in a swift wind.
Thanks for all of the replies guys!