If you want a quality keyboard forget about the mainstream brands like logitech etc. Those so called "gaming" keyboards use membrane buttons which will become "sticky" after several months of use and is no better than a 2 quid keyboard. Go for mechanical keyboards like das keyboard or filco majestouch. They last forever and are a joy to type on. The filco majestouch with cherry brown keyswitches in particular is truly amazing if you can afford to splurge for it.