Off the shelf, Edelbrock (bare) or Shelby.
Edelbrock has been faulted for bad springs and valve jobs out of the box, but if you buy the bare heads from them and have your own (competent) machinist do the valves and select the proper springs after consultation with your cam provider, you'll end up with a very reasonably priced set of heads.
Don't know too much about the Shelby heads EXCEPT that they're pretty dedicated to the 427 bore size which means you'll either have serious valve shrouding issues if not actual touching of the valves and cylinder walls. Also, they seem to have very large chambers which on your block would drop your compression ratio down if you could indeed get the valves to work within your bore. Otherwise, casting-wise, they're supposed to be excellent heads, though pricey.
Blue Thunder, who makes excellent castings of whatever they choose to produce, is supposed to be coming out with their own versions of FE heads and rumor is they'll outflow ported medium-risers and more. But the rumor is old, the flow of news is trickling down, so who really knows
Whichever aluminum head you go with, make sure you install spring cups, and use studs for mounting the rocker shafts.
Look up Blue Oval Performance, somewhere in Colorado, they can provide you with the heads, and better yet, a specially selected package of fasteners specific for your set of heads. First time; no callbacks about needing a short stud here...