hate to repeat, but it really does depend on what you are going shoot... if you need the flexibility to be mobile, the IS is invaluable. if you can setup some make shift "shooting position" (be it tripod, wall, or someone's shoulder), you can afford to save the $1k on the non-IS version.
controlling our cam handheld at 200mm without IS can be pretty difficult, even if you can get high shutter speeds exceeding 1/250.
hi, sry i didnt go into details of what i prefer to shoot.
im using the canon 400D wif kit lens and i frequently go to autograph session (签唱会 and concert of varies artist to take photos.
i have been seeing photos taken by lots of ppl in this forum for quite sometime using this lens and they turn out much better than those i hav took, thus i begin saving money since the beginning of the year.
other than that i also like to take potraits of other ppl, but dare not approach them
not to exclude landscape as well