@eddz99: Remember how long it took Goku to fly from King Kai's planet to Enma's check out station on Snake Way? It took him hours to do so and the calc for it was rounded off to be at about Mach 30 travel speed on OBD. Even accounting for boosts in stats when he uses Kaio-ken, he's only at Mach 120 at his best speed during Saiyan saga with Goku being significantly stronger than Raditz by that point.
If Raditz is supposedly close to FTL as you think because of dodging Piccolo's Beam Cannon yet it takes hours for Goku to reach the end of Snake Way when he's stronger than Raditz after King Kai's training, why else would you think I would call bullshit on the Beam Cannon's speed when it busted the moon up?
The problem with what you're doing is you're using only long distance travel speed to determine how fast Goku is not his combat reflexes which are much faster than this. Case and point Kid Goku at best could travel I'd say Mach 1 for any long length of time and yet he has the quick burst of speed that allowed him to catch the 4-star ball which is massively hypersonic planetside. He also as many people have pointed out dodged Tenshinhans Solar Flare which is either lightspeed or another uber massively hypersonic attack. Travel speed and combat speed in Dragonball are two completely different speed levels with the latter being way faster.
@supernova7005: Can you prove that Hiei is mach 16+?