Well, I had the doubt between this model and the harder ones, I decided for these because I work with an amplification system for the vibraphone in which you need quite light mallets to have a good range. The only thing I did was to cut them a little bit because they are too long for my taste, but with them you can get all the dynamics.
They have a very warm sound despite being light in weight, I think they are a mallets to have always because they work for any occasion, I would not recommend them to play salsa, I think it would be the only style in which they would not fit.