I am really starting to get into photography, shoot with Canon Ti(but plan on EOS 3 after christmas) and have 100-400 IS, 50 1.8mk1, and the 28-90 that came with my body, now am looking at another len(es) and am contimplating going w/ a 24or 28 prime and a 70-200f4, or going with 24(28)-70(80) 2.8 zoom and 70-200, what are your opinions on primes on the lower end, or would I really even notice a difference. i shoot mostly nature, macro, portraits etc, but have never and probably won't shoot architecture, unless paid. Any opinions on those or others that I may have not thought of, thank you