I have a pair of Paul Buff Einstein lights that work really well and are very powerful. They can be triggered remotely with a pocket wizard antenna or by the light of another flash or by cable. It can be powered b a battery pack or direct wall current. The battery pak lasts a very long time but is not built into the light like profoto ... it attaches by an extension cord. Overall maybe they are not as slick as Profoto but they are much more affordable.