Is the Charisma 103 another one of those modified DL103s? If so, I would look elsewhere, if you want a really different experience. You can only flog that old horse so many times. I have no idea at all about a Grado Sonata, so can't help there, but if you are fixed on these two, I would go with the Grado just because. If it's suitable for your tonearm, as Chakster implies.