Mercury vapor if made the right way can last years and years longer than the other 2.
Buddy MV from the 70s would last 15 years in full brightness and still light well 10 years after and can actually continue as long as 30 years! I have some MV lamps that actually had 40 years of service, works but really dim!
100 watt and 175 watt tend to last the longest...175 the longest....
They removed a feature on MV which Westinghouse had which was called "LifeGuard" GE called Bonusline and Sylvania called "Banner".....actually Westinghouse never removed that feature, but Philips removed it about 1990...but had continued a hidden lifeguard in 50 watt MV......
They removed it cuz they lasted TOO long for THEM that bulb production were losing money on MV lamps in early days when MV was SOOO GOOD!.......