Krow
Garbage Connoisseur
Maiden has some dubious songs/albums to their credit, but even the less great stuff is much better than a lot of stuff you'll hear. Their sound, and they know it. For example, check out El Dorado on The Final Frontier. Some good stuff still left in that band.
If they could make an album and just trim the fat off instead of 80 minutes with 7-9 minute songs it would greatly benefit them.
That being said I think a lot of traditional heavy metal bands these days are more than capable of writing songs that match and surpass even the best of what Iron Maiden is doing nowadays.