Had two pairs and the right ear has failed both times. The first after around six months the replacement pair after 3 months. When they work they are quite good but they are unreliable and I would not recommend anyone purchase these especially given they are quite expensive.
Had it five years and thank god I bought the extended warranty. Loss of suction eh? Hmm, they should be done for being misleading. Mine broke down/lost suction at least once every year. At the moment it doesn't hardly suck at all. Utter rubbish, never again!