I have a Bird mate, I can tell you that the front disc has awesome bite Rear brake arms, not so good, had to replace them with SD7's. [Does come with decent pads though] And the Pro, can't really say much about it because i've never used one, but to be honest they're pretty much the same. The Pro comes with a front freewheel instead of a freehub on the back, which I guess some people look at as better. But it's completely up to you, if you want to spend the extra £70 and get the Pro, then you might aswell because it's going to be better. But I don't think there's much in it ...