We have them - they are Swiss ! - and would highly recommend them too. ds has a Nemo one he takes to school. Screw top hasn't leaked at all whereas we also have cheaper version, McBott, which has a pull-up stopper but does leak after a while.
These look nice .... are they free-flow or do they need the little ones to take a good suck to get water out? Just wondering whether suitable for 16 mth old whose own cup leaks all the tiime if we're out and about?