I love OB, but I did find most things, like the Emerald Physics line for example, to be way too expensive and relatively not-so-well implemented for my tastes. So I eventually moved into DIY. I'm currently still building a pair based on Danny Ritchie's "Wedgie" speakers, but attempting to add horns into the mix. Using OB ribbon tweeers and Danny's LGK mids (MMTMM).
OB bass is handled by 2 Hawthorne Audio 15" "Augies", but they are not so much subwoofers here as they are simply part of a 3-way design. Digital crossovers, delay, gain and EQ...(but not phase) all fully adjustable make implementation a dream. Then lots of a singularly good conditioning solution I've found thrown at the whole system that takes the "digititis" and more completely away.
OB bass here is great. It's true that it doesn't disturb room modes or neighbors and that the texture and tone are the best. And as has been said before, it turns the "duhnn, duhnn, duhnn..." of boxed designed bass into the "dahh, dahh, dahh..." of OB - waaay more like real music. When you hear that for yourself, you suddenly understand the underlying reason why it is that 'too much is never enough' when it comes to boxed bass sound and one key reason why everyone seems to be on that endless quest for mo' better bass. When the bass sound is freed from the addition of the "duhnn" sound being imposed onto the decay trail of a deep drum and the sound is likewise freed from the artificially induced dynamic, gut-level "punch" being added to the initial attack of a standup or electric bass line...then the bass instruments are finally and fully 'separated out from each other' and the real sound of each instrument is allowed to come through unedited. Then it can hit you that this level of transparency in the bass can, finally, be made to be Exactly on par with the transparency throughout the rest of the range. Search over. Only the problem of the lowest frequencies remains. Although here that has been far from any kind of deal breaker for me.