Thank you for chiming in with your „sound advice“. You are absolutely right. There is many factors though which will greatly affect the sound of your keyboard. Materials of keycaps (abs often sounds nicer but pbt is more durable), the casing (even heavier metal cases can sometimes sound hollow) and of course sound dampening inside the case and last but not least: your desk. If you can isolate the vibrations from your keyboard by using a deskmat your keyboard will sound more „true to itself“.
But yes – try before you buy and keep an open mind. At the end of the day it’s the functionality and productivity you get out of it that counts. :)