spitfire
Yep. I bought some Spitfire Burners a couple years ago and they are still rolling fast and smooth. Aside from 1 of the eight bearings they're still quiet too. The removable shields pop on and off easily for cleaning but the shields have never come off while skating. My next set will surely be Spitfire SwissFires, I'm 100% sold on their bearings.
That said, there are other good bearings out there. The Gravity and Honey bearings are awesome, they're longboard companies so they make bearings for speed.
Not all bearings are created equal, regardless on abec rating. I was sent some Independent bearings a few years back and they didn't roll, it was like every bearing was stuck. I tried breaking them in but after several sessions nothing changed. Onthe bright side I never had to chase my board very far.
I disagree with Pica about bearings being overrated. True, the abec rating makes little difference when skating, but the difference between good and bad bearings is huge. I personally like a smooth and quiet ride and my Burners in a set of 56mm Street Cuts is perfect.
Last thing: stay away from WD-40. It collects dirt and overall it's bad for your bearings in the long run. You should always use a greaseless lubricant. Plain old household 3 in 1 oil is much better and essentially the same thing as the bearing lube sold in shops.