Thomastik Superflexible A Cello med Chr.

I'm still really a beginner, so don't know enough about strings to really comment intelligently, but I do know that they make a huge difference! I broke my A and had to replace it, so this one doesn't go with the others in my set and sounds a little louder and brighter, but in fact it is kind of nice like that. I think these are my go-to strings for the time being.