I'm actually interested in trying these, but what's the difference between Quantum Isotope Ceramic Hybrid Series Bearings and Quantum Atom Ceramic Hybrid Series Bearings? Yes, I read the descriptions (makes one seem better for street and the other cruising) but is there an actual difference or is it just nonsense? Also how do these compare to Bones Swiss which I've skated exclusively since I was like 10 (now 30)? I've been a lot more willing to try new stuff as of late and these intrigue me. Plus I wanna try new things before I'm too old.