Hi guys! Im planing to purchase my next lens for my Nikon D5100. First off I'm not a pro photographer (obviously from my camera) but I like to call my self an aspiring amateur photographer. Right now in my camera bag I have a 30mm f/1.8, 50mm f/1.8, and my kit lens which I barely use. I love using my 30mm & 50mm because of the bokeh and large aperture. But what I'm really looking forward in my trip is to take many landscape (tropical trip, Philippines) and as well as portrait photos. So virtually a versatile lens that has some what of a large aperture and short focal length for landscape and as well as a long focal length just incase that picture I'm trying to get is a bit far. Price point would just have to be under 8-900 dollars, as technically my d5100 is a DX sensor. So is there any lenses that you would recommend based on personal experiences/ownership? Thanks!