I've had a few leons and it seems to have got progressively worse with each one, my new one is so bad it looses most DAB stations, often for many miles, depending on where I am in the country, stating to wonder if it's not only the car, but whether they have downgraded the DAB transmission signal strength in some parts of the country, as on my first early 2013 mk3 I got great DAB reception all the time.
Also don't know if it's already mentioned, but there's no need to pay more for a can bus bulb, the reverse light isn't monitored so doesn't matter if it's can bus or not