I think the max. level speed at sea level of the Army's AH-64 Apache is slightly above 190 also. That's about the same for the Navy CH-53 Super Stallion (I think the newer variant is called Sea Dragon). The Army's UH-60 Blackhawk (the type that got popped in Somalia) goes low to mid-180's, according to my somewhat out-of-date book.
The military aviation guys refer to helos as "low & slow", so I don't think top speed is really the point when they put rotors on them. I'd like to put the busa up against my buddy's Beechcraft Bonanza sometime, though. I'll bet Turbo Rick could take him, but it'd be a good battle.