I've just replaced a 14 year old Zanussi condenser drier with a vented one. The Zanussi was still working perfectly, but we've been lucky enough to change the garage into a utility so for the first time could have a vented one fitted. The rubber seals were beginning to go on the Zanussi, and we decided to do fitting etc whilst the rest of the mess was still ongoing. I went for a vented because they are said to be cheaper/more efficient, and certainly the new vented machine is fantastic. I didn't find our condenser inefficient/expensive to run, but am delighted to have been able to make the change.
A thread for people who have been on GN a long time


