I have it installed, (I have 5 contacts) but waiting for some more contacts to join. Doesn't seem to lag that much with the messages. I haven't used whatsapp in a long time. I don't think I am going to keep this, unless users from the other platforms adopt it.
Not sure how it may look on other models, but it's a very small font (you can change the message size fonts though), it basically renders my 9900 touch screen useless. Just another xplatform app. Maybe a 5/10 from me.
