Re: To spoiler, or not to spoiler?
I think it's a close call actually, so close I'd not go out of my way to pay to have a spoiler, but if my car came with it (which it did), then great.
I think it comes down to your wheels. If you have the standard 16" wheels it'll look SO wrong, so please don't do it! If you have 17" teledials it'll be fine... maybe with other 17s will be fine too.
The spoiler was part of the aerokit, and of the three external parts the spoiler is the least desirable: the Teledials and front splitter are best, so I'd say (and I don't know your car) get some Teledials or the front splitter over the spoiler. Or spend some of the £350 on a Ragazzon back box, a modification you can hear and feel everytime you drive.
Ex '99 6-speed 3.0 V6 GTV, now Z4MC