Thank you very much.

or to Mulhouse :) 

In General it´s wise if traveling from France to Switzerland to book the TGV´s just till the last french stop and use then regionaltrains to cross the border as this is much cheaper and you usually lost just 30minutes :) 

I even made it to get by TGV (Final Destination Zürich) till Mulhouse catch a Regionaltrain to Basel and then catch the same TGV from Basel to Zürich :D 

Yep Mulhouse is also fine but I very rarely see 10€ seat reservations to there (more 20€ seats ofc but really not all the time) while there are often lots of 10€ seats to Strasbourg.

Of course it depends on how long in advance you book