Those maroon pairs they have on LA are ORA true breeding pairs. I must warn you that they will be old and huge, but do not worry about agression within the pair.
My LFS just got a pair of the maroons retired from ORA...the female has to be 6+" and probably 5+pounds. I've never seen a bigger clownfish. The male would be regular female maroon size. Of course, 26 years in captivity will do that to fish(that's how long the pair my LFS got were breeding in captivity, making them at least 28 years old...LA should be able to give you a lineage on the pair you buy). They are the most docile fish I've seen and if you buy those pairs from LA, you will have tons less to worry about due to aggression. But, the drawback is that they may not be around for much longer...noone really knows the life expectancy of clownfish.