Quality = Money
Range = Money
Quality + Range = Big money
If you want very high quality lenses on a budget, go for primes.
If you want lots of range on a budget, go for a consumer level zoom
If you want range and very high quality, then it will cost you.
That is the simple equalition of DSLR lenses.
sure but it's not whole truth - my opinion is that when all users
are forced to use DSLR (simply because prosumer cameras disapear
from market) and relatively cheap bodies like 350d/400d are
available, it would be nice and logical to give same correspondent
kit lens that would be without problem usable for common people for
everyday usage, without some significant degradation of image
quality.
I only need decent replacement of my G2's 34-102 lens and a little
more on wide or both ends - 28-110. Nothing more but nothing less.