boy you guys are fast typers...you replied and rereplied before I finished my now redundant comment!
Personally, I think the question too wide open. A more specific question would seek to find consensus on which approach is better: higher or lower grade, more comics or fewer 'better ones'...etc which eras to concentrate on, and for the short or long run appreciation.
How about this: What would be the WORST way to spend/invest $40,000 in comics now?
And no, JGreen is NOT allowed to participate....