I do some work with
Bike Switzerland (some maintenance and guiding). If you rent bikes for the Cyclotour du Leman in late May then they'll probably be some of the brand new ones from the big new fleet that we're getting in for this summer.
The Cyclotour is a great event. There are a few other threads on here about it, just use "cyclotour" in the forum's search function and you should find lots more info.
We often try to organize a get together the evening before with a bunch of friends that will be doing the ride, so if you'd be interested in joining that then send me a PM nearer to the time, and I can hopefully give you details then.