Hard to go against the logitech G5 even if it is “old”; I mean logitech has the G9 too but I personally don’t like those changeable grips it has. If you like the feel of your current mouse, the G5 will feel right at home for you. Razer also makes some decent mice but they have a totally different feel from the logitechs so it would take some getting used to.
Just for reference, my mouse for my desktop is an Ideazon Reaper and the one for my laptop is a Logitech MX1000