How satisfied? Very, enough to build another amp around it (or rather its sibling TPA3251, it is in the making…). I have had no problem with noise (or anything else) with the 3e Audio TPA3251 or TPA3255 boards but I guess it depends on enclosure and proper grounding…
Ps. I can’t think about anything I would have done differently apart from 19mm MDF instead of 16mm and a darker wood for the cabinets…