Hello. I've been reading and learning as much as I can from the site as well as forum for the last 2 years. I am going to Costa Rica for a vacation at the end of July for 6 nights. I have the following equipment and was wondering what else, if anything I need to buy/rent. Canon 350D (XT) with vertical grip (for my big hands) Canon 50 f1.8 Canon 28-135 IS (my usual walk around lens) Tokina 70-200 f2.8 ATX-Pro Canon 420EX flash Tamron 90 2.8 macro Tokina 19-35 I am planning on buying a backpack style case. Any recomendations? What do you recomend that I carry as well as do you think I need to buy anything? Will a Macro be necessary? I have been thinking about the Canon 100-400 IS plus a monopod and carry that so that I can leave the 70-200 at home. I was also thinking about the canon 10-22. I am not sure if I should rent or buy. Thank you all very much in advance.