<p class="MsoNormal"]Thanks for the help everyone. I really appreciate the advice. Now it seems that I am torn between two very good options. I can go with the EF 17-55mm f/2.8 IS USM as the &ldquo;all purpose&rdquo; lens. Or I can go with the EF-S 10-22mm f/3.5-4.5 + EF 24-105mm f/4L IS combination. Again, I am new to photography, but I really like the wide angles that the 17-55mm give me and I will definitely be able to use it in both the outdoor landscapes and indoor castle, museum, etc shots. I have to admit that the combination of the 24-105mm and the 10-22 mm would be great but the cost and having to switch the lenses out (especially with three kids) does cut down on the time that I have to get those great shots. The 17-55 mm is a little more than I wanted to spend, but I know that a good lens is critical. Bryan says that the 17-55 is one of the best all purpose lenses available, but he also says that &ldquo; If I had only one lens, this would be the one.&rdquo; (referring to the 24-105 lens). So in the end, is the wider angle a better choice, or is the longer focal length a key? I have never been to Europe but from what I have seen I think that the wider angle would probable suite me better in this case. Is there anyone who has traveled overseas who can give me some advice here?