Who else does an i-shift type set up?
I think most big manufacturers have, or have had, their own version of it.
I've had some experience with the Peugeot/Citroen EGS/ETG, and driving wise, it does seem one of the more successful ones. As expected with PSA though, they do have problems, but are usually not serious.
There's also Vauxhall Easytronic, Fiat Dualogic and GSR, Dacia Easy-R, Ford Durashift and SelectShift, etc., etc....