The difference between now and 20 years ago is that DB buses have a resale value.  In addition standards have changed in terms of accessibility, emission standards, fuel efficiency etc.  As I said, I like the RVs, but they are no use if your mobility ain't the best.  The other cities have had fully accessible buses for some time, which is a good thing.  Refurb is only worthwhile if you get a good return on your investment.  The MCs with a bit of work would last another 10 years.  The ADs were withdrawn relatively early, no surprise considering their structural issues!  In a way its a pity that DB and BÉ didn't get more MCs back in 2000, a well proven vehicle, very solid and great maintenance aspects.  They don't age too badly either.