reviews mentioned the z623 being powerful enough to shake windows and picture frames but hearing lots of people complain about the build quality is making me think twice. spending 15k/28k on a system with known issues feels risky. If i were to go for a custom setup, how much would i need to spend to get that same level of bass?

i know a good AVR alone could set me back around 40-50k, plus about 35k for front speakes, and the sub price can really vary since deep bass is my main goal.

im thinking of getting the logitech ones for now until i can save up for a custom setup. would you recommend them over a custom setup, especially if im primarily looking for deep bass?