One of my "signature" techniques with my photography is lighting. I don't bill myself as a natural light photography, and I *firmly* believe that people who try and talk down flash or strobe lighting, and bill themselves as somehow purer or better because they only use natural light simply don't know what they are doing with strobes.
Personally, my lighting of choice are speedlites - Canon branded flashes. There's a whole world of "off camera lighting" out there, and how well you figure this world out dictates how good you are at using these speedlites. Personally, they appeal to the gadget geek in me, while letting me get creative and dramatic.
This photo - one of my favorite "kid" portraits from 2012 - has three speedlites in use, balancing with the natural sunlight of the day
While this handsome chap was only lit with one
I challenge anyone to tell me they are somehow better, or worse because they weren't lit with pure sunlight :)
Of course, you can get dramatic and do things you simply could never do in "natural" lighting. This was lit with only two speedlites - one of which had an orange gel on it
And to the point of my post - I've recently sold on my old 580exII's, which could only be triggered with a cable, or infrared (like your TV remote) - which meant shooting outside was always a challenge in getting good line of sight, not putting them too far away from each other, and making sure no one was blocking the receiver - and replace them with three 600ex-RTs - which have radio wave triggering. This means I now have much greater range, no line of sight problems ... I can hide speedlites behind walls, in softboxes ... anywhere I like within around 100 feet, and still get the amazing, dramatic - or simple and complimentary lighting that I'm going for.
I can't wait for 2013 to hit, and get the chance to really play with these babies.