lmfao <3
I think mine's prolly Ai no Uta -Majenta Rain-, but I've pretty much killed it now. (too many listenings D: )
I'd say other favorites are also: Giniro no Fune (reminds me of Duty), Sakura Saku, Roppongi Shinjyu, China Rose, Mokka no Koiboto, Koi Gokoro, Heat of the Night, and "THE END" are also amazing IMO. (I'm forgetting something.. I know it! D:!!!)
And, my favorite album currently would prolly be FOXTROT..

Semi OT: Does anyone by chance has her The Last Quarter, or ID albums? I can't find them anywhere!