Re: To cage or....
If you are on classic insurance and over 25 you might not get charged for mods - including cages. Our s3 ti has a 1750cc engine, cage, 4 point harnesses etc, and this mkes no difference to the cost from Adrian Flux.
As for living with it - the 4 point harnesses are a pain but the cage not too much of an issue at all - once you are in you are in.... No back seat passengers allowed however.
Have to say I would be very nervous without the cage Vs all these euro encap 5 star cars - when a corsa can weigh in at 1.3 tonnes, let alone a big suv - its a big nasty world out there for little old cars these days.