Unlike a pp, I have a Bosch condenser and it's great. It replaced a Zanussi condenser which was so so and only lasted about 4 years before the bearings went. Have also had an AEG condenser when we rented which was awful, never dried anything properly. Trying to get a load of towels dry was an all day job.
I've just sold my hotpoint condenser dryer and bought the exact same one but larger load. I think I've gone from a 7kg to 9kg.
The reason I got another one was because I loved it so much, never had a problem and the cycles aren't too long. MIL bought a new heat pump dryer and it takes 2.5-3 hours to dry a regular load. Mine takes about 1.5 hours for the heaviest load!
I returned my Bosch condenser dryer as it was almost nuclear - it shrunk the clothes that I'd put in it on a low heat. I exchanged it for a vented Bosch dryer (which I'd had before) and that was much better