I have always tended towards guitars the size of a classical one (00 in Martin parlance). I just bought a 000-15S and I am very pleased with that.
I tend to use the same guitar for everything and I think the 000 gives just that little extra bass that makes it a good guitar for accompanyment as well as finger picking.
My previous guitar was a Maton small bodied. It was the size of a classical, but had a deeper body.
It is my theory that steel strings have more overtones than do nylon ones and so they will sound more tinny for a given body size. That is why a deeper body or a slightly larger body than a classical gives good balance for finger picking.
Murray