CJs are my most favorite sets and I finished my 183 master pose set this past summer adding the 1914s I needed. Its a lot of cards, none are cheap and the Cobb/Jax will run you $20k+ in psa 5. I know lots of folks refer to these as "common" but put together the set and will find the rarities including Rickey and other condition sensitive cards. I wrote this up if interested:
http://www.net54baseball.com/showthread.php?t=179326