When you are just getting started, they all look alike. In building a new site, I was excited to find a theme I used a few years ago that I remembered as being very functional and easy to work with. However, once I installed it, it lacked many of the new innovations and flexibility. What's hot now in 2015 are bright bold photos, with magazine style options and with lots of great ways to display your photos. Sliders are hot, although there are plugins that can add that function if it is missing. On the other hand, themes can be changed easily, don't be afraid to experiment. If you are frustrated with it- try on another one.