I have a theory that there is are enough LA +0 elf subraces in all the official supplements that you can choose one based upon what stat you want to increase.
So, we get the following:
Dexterity Elf - Moon (Silver) PHB/FRCS
Intelligence Elf - Sun (Gold) FRCS
Strength Elf - Wood (Copper) FRCS
Charisma Elf - Star (Adamantine) Unapproachable East
Constitution Elf - Snow Elves from Frostburn (ok, they don't get a bonus to Con, but they don't get a penalty either!)
Wisdom Elf - this one I'm not sure of