i've been using my Logitech MX518 for a few years now . it was a refurbished choice , but it was all i could afford at that time . that $30 was completely worth it ! so my dad wants one . heh , he told me his current mouse (some Logitech generic mouse) isn't really comfortable and regrets not buying the same mouse i did . although i could simply just buy another MX518 and give him this one , are there any other suggestions on good, comfortable mouses to get? budget is $50 max w/o tax, so it could be $49.99 and i could just pay off the taxes . here is what i am considering so far: - Logitech MX518 [$46] - Razer DeathAdder [$50] - CoolerMaster Sentinel [$50] - Logitech M705 [$50] - Logitech G500 [$66] although the G500 is above $50, i've heard good about the G5 in the past , so that's one of the reasons i am considering the G500 as i am guessing it's an "improved" version of it . if you have any other suggestions , i am willing to take them and consider . all opinions are welcome towards these mouse choices as well . i might end up buying one for myself too , since my dad said he wouldn't mind having my old MX518 xD.