Berlin (dpa) — Too loud, too clunky, too heavy, and not exactly cheap: There are many reservations about classic mechanical keyboards. Flat, light, and inexpensive models, typically what’s known as “membrane keyboards” have become commonplace. However, there’s also a market for modern mechanical keyboards. It’s not just PC gamers who swear by them — other user groups such as frequent writers often favour the clear pressure point or characteristic click sound they provide. There are basically two different technologies used for keyboards today: membrane keyboards made of materials such as rubbe…