Diesel injectors now consumables?

With the vast number of diesels appearing on our roads, do you have any information on which manufacturer has the best lifespan on their injectors. I have heard that some of the replacement injectors cost up to $1000 each! This sort of expense is a bit hard to swallow if it happens every 100,000 km. Or are the injectors now listed as 'consumables', and not covered by warranties, the same as the brakes, clutches, etc.? The extra fuel efficiency of the new CRD's is negated if you have to pay a few grand extra to buy the diesel in the first place, and then have to buy new injectors every few years on top of that. Not to mention that the diesels seem to cost a bit more to service as well. How many kilometers could we drive our petrol guzzlers on the $6000 it costs us to drive these new 'fuel efficient' diesels? Many motoring writers are pushing the move to diesels, but at what cost to the average driver? I am trying to work out if it's worth getting a diesel SUV, or sticking with a new petrol one. Any advice?