MX-80, grip sizes and weight

I want to buy a Victor MX-80, as I've read good things about it. I live in the US, and the only reliable merchants I found are BadmintonAvenue (3U) and MyBadmintonStore (4U).

I got confused by the grip sizes. On the Victor official website http://www.victorsport.com/product_detail_1258.html
it says

3U / G5, 4 (G2, 3)
4U / G5 (G2)

Then on BadmintonAvenue http://www.badmintonavenue.com/Victor-Meteor-x80-Badminton-Racket-p/meteor%20x80.htm
It says for 3U: Grip Size: Yonex G4 // Victor G2

So I'm guessing the G5, G4 = Yonex
G2, G3 = Victor

BadmintonAvenue says Yonex G4 = Victor G2, but the Victor websites sasys Yonex G4 = Victor G3. So I'm confused...

Also my hands are kinda small, which grip should I get. I was also deciding between the 3U and 4U. I am an all-around player.