So my Razer Copperhead finally gave up the ghost. I'll be using a cheapo wireless notebook mouse until I can replace it, and I'm looking for some suggestions. I generally use a fingertip grip, and I'm not a big fan of the MX518 or its clones. My budget is a paltry $50, and extra buttons aren't a very big concern. My current top candidate is the Razer Abyssus, but I'd love to hear some suggestions from some of the less common brands like Cooler Master, Mionix, or Roccat.