So far it looks like the .243 is leading, which I kind of expected.
I got a PM to consider the .260Rem and it looks like a solid choice, but I'm not sure the availability is there.
After that it looks like 7mm-08 would be my fall back plan, then onto .270 and .308. 30-30 will be an option if I come across a nice lever at a nice price.
That sound like a plan?