When I am promoting my river rafting business, I prefer to avoid the use of hyberbole like referring to my employees as "the most experienced guides." I prefer something a little more understated as in "friendly, personable and professional" http://orionexp.com/
Or as Leavenworth Outfitters describes their employees on this same page, as "enthusiastic and licensed".
Hyperbole is for selling soft drinks and useless products no one really needs. I would be wary of anyone in the river rafting adventure travel industry making unsupportable claims and utilizing qualifiers such as 'best', 'most' and "rated #1".
"Raft the best rivers around with the most experienced guides."
- Allred Escape Vacation Rental Condo (view on Google Sidewiki)