They lack a bit of grip, and that's the only weakness in my opinion (the Tortex are my gold-standard for grip, and one could immediately feel the difference). If you play unplugged, they are extremely noisy, but once amplified, that noise is gone, all that remains is a great attack and an excellent sound. They last so long, that I still have one bought before 2010 (it's 2024): it is consumed, no longer transparent and the writing is all gone, but one could still play with it... 0.73 mm is a very good combination for string resonance and mechanical resistance.