Hmm... I would have to say my favorites back in the day were:
After Dark
Kimi to iu hana
Mirai no kakera
kimi no machi made
Loop&Loop
Rewrite (though for some reason it's at the bottom of the list like most other songs that got played as part of an Anime OP )
My biggest problem with them though was that it is so hard to find a Japanese person who actually knows who they are for some reason >__< Most people know rewrite, but almost no one here knows who sings it, so my interest died a little bit because I seemed to be the only one around who listened to them haha XD
EDIT: Oh yeah, and the only album I've bought so far has been Solfa XD I really want to get more of their albums, but the price for new CDs in Japan is ridiculous...
After Dark
Kimi to iu hana
Mirai no kakera
kimi no machi made
Loop&Loop
Rewrite (though for some reason it's at the bottom of the list like most other songs that got played as part of an Anime OP )
My biggest problem with them though was that it is so hard to find a Japanese person who actually knows who they are for some reason >__< Most people know rewrite, but almost no one here knows who sings it, so my interest died a little bit because I seemed to be the only one around who listened to them haha XD
EDIT: Oh yeah, and the only album I've bought so far has been Solfa XD I really want to get more of their albums, but the price for new CDs in Japan is ridiculous...