One of the reasons I like mine is that they are older, well known technology. Fairly easy to get repaired when necessary and don't appear to need much in the way of specialist parts. That will change over time, and they seem to be closed for business now..but they are not in the "disposable"if anything goes wrong class.
They've got issues - heat build up can be frightening, noisy fans, the extreme low end can kill speakers, exact replacement speakers probably aren't made these days, the tweeters fry (if you turn them on and use them) the aluminium fronts can bend (done that too) they are stoneage heavy etc etc But overall, I've found them to be very well built, reliable and good sounding designs.