If there is any way you could avoid a condenser, do.
I bought one 3 years ago. he thermostat burnt out twice during the first year. The engineer ended up setting it on a lower temp and it could take 4 hours to dry a load after that. Then the new thermostat burnt out, too. Also, there was a condenser dryer in a house we rented and that thermostat packed in within about 6 months. A friend had the same problem where it broke down about every 6-8 weeks. Luckily, it was under warranty, but what a PITA. She got rid when the warranty ran out.
I bought a vented dryer recently. Best £149 I ever spent.