I got my infinite ultimate set today

White things are transportation covers for the fuselages.

I eventually bought it (set with all wings and fuselages).

It's very good and you get what you pay for. Wings are a lot more stable than previous ones. Also you can feel that it glides much better than most other brands and is very stable at high speeds.
I'm 187 cm & 95 kg and can even use the 650 wing in 10 - 12 knots of wind with a 9.0 sail. Although you have to get used to using a short fuselage and small stab in light wind with big sails. Same goes for 475 - also has great low end and almost the same speed as R430.

Thanks for the info. The largest wing is ? cm of surface area? Lightest wind limits with your smallest sail?