I once tried Weedwackers (the cheap ones off eBay). After several weeks they were still stretching and going horribly flat each time I picked up the bass, and like an above poster said, I swapped the E and A for Innovations (Blacks, I think?) as there was no sustain or volume with them, just a percussive dull thud. That said, I have heard there are better quality Weedwacker-types that solve these problems (I assume the prior post is referring to these, Lamberts).