small block heads, 4027596 casting # any good??

alright guys, after doing a little more reaserch and a little more reading on some other threads i'm getting to wonder if i'd be better off saving up longer and buying a nice set of aluminum aftermarkets after all. I got to thinking that after i put all the money into these stock heads, i may have more money into them then it would have cost me for a good set of aftermakets. whats your guys take on that?