So I've got these blue Herdims that I've had for a while and they are super flimsy - and feel like a fender medium. Is there a thicker/stiffer version of these anywhere? Something closer to a Tortex 1.0? The few google searches I have done keep saying that the blue Herdim's are the thickest. However if this is true - then the other versions must be really really thin - borderline unusable.