Any info or website on which ones are best?
You could check out bloodmallet, or try simming them to see on raidbots. As I recollect, they are decent but not amazing for straight pve.
According to bloodmallet, the 415 versions are something like 14th on the list, though keep in mind the difference between 14th and 1st is only about 220 dps, and they are higher then all 400 helm.