5K's I think are built just as well and have just as good a track record. All DSP Speakers have pretty good track records. I have 10 5K's and not a failure yet. Some are 15 years old. Where I did have minor failures on much newer 5500's.

- Fiddler (IMHO)

If you think listening to music is fun, try learning an instrument.
HT: G61RSL, 4x5K, 5.5KHC, 2xSC6000, Transporter, HD621, Philips BDP7501 4K, Tivo, 65" LG OLED 4K C6
Computer: Foobar2000, 5K, Mojo, HiFiMan HE1000 V2