Hello Luc,
You have been on a couple F18's so the question you should ask yourself is where are you going to sail? and how do you want to manage the boat for beaching and launching. The F18 need to be babied with pads and wheels, its not like your H16 or an H18 where you can drive them onto the beach. Don't try this with a Tiger
https://www.youtube.com/watch?v=M8-rkQNCYQg On the water the Tiger is great and very fun to sail!
https://www.youtube.com/watch?v=DzYWyCS0dVQ 2 more cents its best to have an exit strategy on the Tiger see video at about the 1:19 point. I think on a side tip over the Tiger ejects you more to the center of the main sail, where the H16 you hit the trailing edge (I note this for yearly cost concern). Both the H16 and Tiger create great pitch pull photo ops see youtube for more examples.
I have only had my Tiger for a year and a half so I'm still getting used to the difference between my old H18SX with Tiger spin setup. I have soloed some in wind under 10 and find it manageable but I'm still working on how to de-power when needed (learning curve).
I raced the Delta Ditch Run last year and it was blowing about 30 and managed to
survive with only flipping once (crash tack to avoiding collision with foiling kite boarder that didn't understand the physics of TONNAGE).
Where are you located? There are a couple Tiger's in California for sale.