Depends on your budget for either one.
I was in the same position about 10 days ago and bought the 580EXII. My reason for buying it instead of the cheaper 430EX was that I needed the range that the 580EXii provided as opposed to the 430EX. Decided to get the best and not look back.
For your lens decision, as what xunjas mentioned, it's whatever you want to shoot. To me, the convenience of a fast telephoto zoom is all too much, and I'm shelling out to purchase the 70-200mm f/2.8IS within the year.
You probably can get the 70-200mm f/4L IS and the cheaper 50mm f/1.8II at the same time (if your budget allows) because the 50mm is priced cheaply at ~S$120. Inclusive of good filters and all, it'll probably cost you about S$2k (70-200, 50mm + 2 filters).
Hope this helps =)
I was in the same position about 10 days ago and bought the 580EXII. My reason for buying it instead of the cheaper 430EX was that I needed the range that the 580EXii provided as opposed to the 430EX. Decided to get the best and not look back.
For your lens decision, as what xunjas mentioned, it's whatever you want to shoot. To me, the convenience of a fast telephoto zoom is all too much, and I'm shelling out to purchase the 70-200mm f/2.8IS within the year.
You probably can get the 70-200mm f/4L IS and the cheaper 50mm f/1.8II at the same time (if your budget allows) because the 50mm is priced cheaply at ~S$120. Inclusive of good filters and all, it'll probably cost you about S$2k (70-200, 50mm + 2 filters).
Hope this helps =)