What is the intended use? If elk or larger I lean to 30cal, if deer it hardly matters and 7mm probably gets the nod.
Sure, there are more 30cal bullets out there but the real question are a) what do you intend to do with it, and b) is there a 7mm bullet that fulfills these needs?
While there are oodles of 30cal bullets out there, I only use 3 of them in my 300WM and ONE of them in my 30-06. As long as you have choices that meet your needs, why try for 2 new guns when all you need is the 7mm-08 and you're good to go..