Had several attenuators. Weber is great, perfect price to quality ratio. But speaking about the best attenuator EVER, for me it is the "Ultimate Attenuator". You can get a used unit for a decent price and it will literally punish any other brand, IMHO. However, it is powered and has a cooler, so it's not dead quiet like Weber (but you can fight that, and it won't be heard over an amp if you're practicing).