Definately
Densetsu no Futari on their second album (
Ongaku no Susume) reminds me of Puffy. The style of the song, and even their voices sound so much like Puffy I bet you could slap it on a Puffy disc and not notice the difference. It's kinda freaky actually......
I've not listened to Orange Range though...so I don't know.
And the first couple if pictures that Sony put out of the girls bore an uncanny resemblance to Heartsdales:
and
thankfully they haven't really used that look for anything other than a couple of pics on their website.