Here's the speed on my NOW connection. Same 900/500 speed advertised.
To answer why I picked NOW for the curious, was entirely the price. 2degrees were charging $110 per month for this speed, while NOW charge $99 usually (I am on a promotional price).
Doesn't seem like a lot, but I live in a student flat where we've just come under some financial issues (flatmates moved out so we each have to pay bigger chunks of the bills).
Also I didn't know NOW used CG-NAT, I'm not surprised given it seems most are at this point but knowing that ahead of time would've been handy (had a static IP with 2degrees because of CG-NAT issues).