I have basically moved off the boards to sb land, because it satisfies many of my needs. To answer Skibum's question about what else -- for me it comes down to availability when I want it, generally 2-3 hours sessions and at least one overnight per month. (6 AM, lunch, after work, weekends etc). While your math does work, I've grown tired of one and done 30-45 minute sessions. While that is still occasionally on the menu, I'm pleased with my babies and how those arrangements work.