If you thought that Logitech was just going to let Razer's Naga MMO mouse go unanswered, you've got another thing coming. The G600 MMO Gaming Mouse matches the Naga's 12 side-mounted buttons and one-ups the rival across the aisle with a toggle that gives each key a second function -- if you can't bind it to a mouse button, odds are that it doesn't belong there. Just in case the prospect of spending an evening programming a mouse isn't all that enticing, the G600 has three profiles right from the start, two