Posted By:
Eric BrehmPeter -- do you collect the '33 Goudey cards raw or graded? What condition range do you want to upgrade to?
My experience is limited to PSA-graded cards in the NM and up range, but what I have found is that prices on the HOFers (64 out of 240 cards) are relatively stable over time and that SMR is a pretty good indicator of what you can expect to pay. The same is true of the more plentiful common cards. If I'm correct on that, it won't make much difference if you get them now or wait.
With scarcer commons in the higher grades, there is more volatility due to continuing competition for the lower population ones. Depending on which card it is and who happens to need it for their set, sometimes you will get a reasonable deal on the card, and other times you will have to fight it out.