I've decided that it's time for me to get a speedlight for my Nikon as the popup flash is extremely limiting. I was looking at the SB700. I like some of their out of the box features like caps that can provide different color lights (which act like gels), diffuser cap, etc. I've heard a number of people say you should stick with you brands speedlight for starters but I've heard other's say they're overpriced and a third party options will give you what you want for a lower cost. Thoughts?