9F is the free-ist wheel, optimal for the hottest days. Does your LO206 class run 11x6.00-5 or 11x7.10-5 tires in the rear?
I don’t know which tire compound you run + the tire width 6" or 7.1" but I have heard in 206 racing people are typically trying to free-up the kart. If this is your case, then I would go with 3F or 9F depending on how hot it gets in your area or how rubber get laid down on the track. If you are looking for more corner-off grip, then Tiger is the right choice.
3F is a great all-around wheel.