The viper ones look fine.
For £90 (including link pipe) your gettting a nice exhaust.
Worst case scenario... you put it on run it for a year it starts looking shabby so you buy a new one next year. If it happened like this for 3 years it would have cost you just over £200 (you wouldn't need a new link pipe
)
A 'name' slip on would have cost you this and would look shabby after 3 years too.