So you have to consider all the alternatives and compromises and make your decision accordingly. But don't have any illusions about quality. With lenses, you do get more when you pay more. You will see a difference in photos taken with a kit lens and an equivalent pro lens - usually a big difference.
thats delicious
i wanna see an example right now, show me the same picture shot with two different lens, one brand name and one third party, and tell me precisely, what are all the differences between the two pictures.