90/90/90 doesnt applt to the TB10. Cruise is
115kn@25 square, app75kn. They are much more impressive in the cabin, good for taking friends in! My main criticism is the gull wing doors, you need to keep them in mind when windy, the gas struts arent particularly strong, and you get wet when entering/exiting in the rain. If you are seriously considering one, then why not go try one out? G-TZEE is at Earls Colne and they are really friendly their. I am sure they will be happy to go over the pros and cons as its a managed aircraft(owner leaves it to the school to rent out etc). I took it for an over night to belgium and it was faultless.
The robin airframe is slippery, but it needs a hangar as its wood and fabric. So dont forget to include those costs in your game plan! Also i am sure that spare parts for Robins are rumoured to be like trying to find hens teeth.