exhausts ?

[roisedan]

I want to change my stock exhaust 02 cooper s . I ve seen one second hand for £ 100 - power flow. Are they any good ? How loud, its the missus car and i dont want her booing ! Im a bit skint at the mo so not sure what the best options are ? Also I hate the bud cans on the back. Are posh mini still the only ones supplying the clip on tail peices. I might just settle for some of them at the moment?
Are there any budget decent systems ?
Cheers