I would go for the 7mmwsm.As for the 30-06 many people buy it simply because it is popular and not because it actually does anything better than the other cartridges.Being popular or older does not make a cartridge shoot any better or kill any deader.If everyone went with popularity and was not willing to try anything new we would still be driving automobiles with carburetors and points, developing less power and getting many less miles per gallon.