All of Antecs new P range has build quality issues that Antec are aware of, yet they make no effort to fix them, poor design.
WJA96 made me think about it, never get anyone on the forums saying my Lian Li side panel just broke (unless they sat on it) but you get people saying there P180 side panel has broken on a monthly basis.
Yes there is need for sticking bits of blue tac.
ANY case can resonate, what separates a good case from a bad one in that respect is how easy it is to fix it. PC7+ just a bit of blue tac and its done. Perfect.
Lian Li S80, 9 hours of playing around with components, and a peice of rubber between the graphics card and case to stop it. Bad case for stopping resonation.
There is the need for solving resonation, having one fix that works in 99/100 cases where people experience resonation is fantastic for everyone.
The PC7+ build quality wise is better than any of Antec's range. You see PC7 and PC60 cases that are about four years old now, and they look like new.
P180 after six months had a warped door and the side panel had cracked. Only one I have ever seen or had the nerve to use after what other people have experienced. Bar SPCR, which designed the thing nobody really rates them head and shoulders above everything else.