I bought the Bose because I was able to try one first and I liked it. I was unable to try the Lightspeed and didn't want the hassle of buying/returning. I have since had the opportunity to try the Lightspeed and I am happy with my choice as I prefer the Bose, I don't know if it is the materials, the design, the shape or the weight but it feels more comfortable to me. It is however more expensive.
Long and short of it, try both and pick which one you like the most.