Just taken my Yozza off after 8 months of use and i have to say the build quality is second to none, it still looks like new after a quick wash, as for the sound of any individual exhaust it's down to taste, i liked the yozza as it had a very race car like sound to it and high rpm gear changes were just heaven to listen to but i also have a zorstec exhaust too and for me the zorstec just has the edge on sound(even though the fabricator couldn't fabricate to save his life), that's no detriment to the Yozza though as the build quality wins hands down for the yozza system but i like the deeper more boomy sound of the zorstec a little more as opposed to the slightly higher rasp of the Yozza but that is purely personal choice and i wouldn't say the zorstec was better just a different sound, there isn't much in it though and i certainly wouldn't say the Yozza's are full on raspy, one word of warning though, if you have them decatted it will be very loud, i was behind someone off here all the way back from scarborough last year and i heard it all the way back over my sound of my stereo, God only knows what it was like in the car!
The Yozza also wins hands down on packaging, only someone with pride in what they make would go to that much effort of packaging it
P.S
The only reason the Yozza came off is because i'm selling the clio otherwise i would have kept the Yozza on for sure due to it's superior build quality.