i'd say clarity because of the route calculator that was recently added, this could really help you if you're new. I didn't have that much fun using Kami cause I didn't know any routes. For MM, I don't know the trust factor you get since I don't play on MM.
The route calculator is confusing to use at first. Where your first point is, is where you jump on. If there is no routes calculated, add more/remove points until it finds something.
Since you can't add a lot of points, what I would do is remove all the points and continue it. But make sure you press calculate at where you stopped from the previous points. So if pixelsurfing is the last point on the route and there's more after it, Go through the entire route and then calculate while you are surfing. The first point it says on the calculated route is "continue air path".