This is a tricky topic. Bass is the final frontier for all high performance systems because it's the most elusive to achieve and it affects all other frequencies in unexpected ways. I don't know how low one needs to experience bass. If you can reproduce a 20 hz tone, you know it's mostly felt. But if it's part of the musical performance then it helps convey the emotional impact of the music and that's good.
The other part of this is that bass below 75hz or so is mostly heard from the room and not the speakers. Of course the speakers produce the bass originally but you will be mostly hearing your room at these low frequencies with most speakers in most rooms. So it's impossible to separate the speaker from the room at the lowest frequencies.
I would take an average frontend that can accurately reproduce bass down to 20hz, than the world's best frontend that can only accurate reproduce bass down to 100hz or so. That's not an exaggerated comparison, IME. I also don't think it's ever possible to accurately reproduce down to 20hz unless one is using multi subs in addition to left and right. The only exception to that is folks that have an enormous room. I read some threads on the Raidho speaker's inability to play dynamic bass at high SPL. This is not a problem exclusive to Raidho. This is a case of having unrealistic expectations. If you only have 2 points sources for super LF in a medium size room, there will be problems with the bass that even the best room treatments and super duper speaker setup can't overcome. It's simple physics.