In my own experience I found the 5500HC to actually be a better speaker than the vertical version.

The vertical ones can be boomy where I found the HC is not. I believe it has something to do with HC having dual ports vs vertical has one. The verticals needed much more MRC to tame them where HC I could get away with none.

- 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