Average life span on white goods is 5-6 years anyway, regardless of whether or not it's a washer/dryer.
I don't like washer/dryers, but you gotta do what you gotta do.
I would avoid indesh*t like the plague, but hey they keep me in business.
Zanussi...they have their ups and downs, but if you don't have to repair them, don't worry about it.
Personally I'd go the Bosch / Neff / Siemens route.
Unless you want to be looking at it for some time...and have money to spend, then hello Miele!