I've used both. They are both good, likely the best available now. You already know the SK7 is more forgiving as far as tilt is concerned, about twice as much. That also makes it harder to read from above - the compass card is hidden/shaded by the depth of the case and by the bowl shaped bezel. The Suunto is a little easier to read from the side, but it'ill tilt so much that it hides the scale! They both react and stop at about the same rate. Depending on which Oceanic model, the pointer "needle" can be a little hard to use, but it's never as good as the SK7s. I have the version with a 'pointed horseshoe' arrow, there is a version with a fat arrow and a version with a skinny arrow - it all depends on age of manufacture.
The lubbers line is easier to use/see on the Oceanic and I can't make up my mind if I like the bezel slanted in (sk7) or out (Oceanic). I guess it really doesn't matter. The SK7 is higher in profile but you can't damage/scrape up the bezel as easy. SK& is very high profile as a wrist mount! Use the DSS elastermeric mount for a wrist setup.
here's a shot of my 2 setups.