Not going to compare with the Merlins until they (maybe) turn up again as they're currently MIA. But from memory, the 8.A goes at least as deep and with a weighty slam unlike anything I have ever heard from a BA driver. This might be due to the fact that the dual bass drivers are literally twice the size of the other BA's. Any ideas I may have had about going with a FS custom as well are now off the table. The midrange is so unbelievably rich and detailed, vocals are very, very good and the top end just keeps going, keeps extending so perfectly effortless but never becoming shrill or sibilant.
I had very high expectations but I was not prepared for this.