Rig-of-Doom (left) and Mini-Rig-Of-Doom (right). Clank to me is the sound of the string bouncing off the fret. What I dig about the SVT/810 is that the clank comes through in a very musical way that sounds like what we’ve grown up listening to. Add a bit of grit and compression from the amplifier, and the speakers to shape the sound, it just sounds like rock and roll. A P Bass into an SVT (or a J with the neck soloed) sounds very guitar like… it’s also eye opening as you’ll realize how many guitar riffs you could never get to sound right on guitar were actually bass riffs. The Mesa is a more HiFi sound. Cleaner/clearer with a less wooly sound. More articulation in the mids. The Mesa cabs tend to be punchier and more articulate. The sealed Ampeg cab sounds like a thick pillow of bass. What I dig about the Mesa setup is that as a self professed tube snob the WD-800 feels more or less like a tube amp. The D800 that I had before it was good, but when I really started to push it it felt like I was running into a wall. Hitting the limiter in that amp didn’t produce the kind of feel I was used to. The WD800 hasn’t given me that issue, the attack response and sag feel very natural to me. The high band on the WD800 parametric let’s me subtly dial in and fine tune the fret clank. I go for something that approximates the sound of the SVT, and it really helps the bass cut through without being irritating. Even though the WD800 can be clear and articulate, it can also be dialled in to be fairly wooly as well; and, conversely the SVT can be run super bright and clean. Just because it’s an SVT doesn’t mean it needs to be dialled in like you’re in a doom metal band. Finally, everyone talks about the SVT like it’s heavy, but it’s only 80 lbs. Just pick it up and carry it… do it enough times you’ll grow a bit and it stops being too heavy. Don’t know if any of that helps or hinders your search, YMMV.