I like to start with a healthy dose of retard right out of the gate. Can only improve from there.
V281 does indeed have a dose of warmth and musicality. Where it differs to the 430HA is that it doesn't sacrifice speed, punch, detail and dynamics to get there.
The 430HA was a big failure for me. I was getting noticeably better speed, dynamics, detail ... etc from my 300B tube amp. Admittedly this is a Glenn custom job and an exceptionally good tube amp, but still, when a SS amp gets its ass handed to it by a tube rig in exactly those areas where SS is supposed to dominate you know there is a problem.