I have the Nikon R1C1 system minus the SU800. You can control it by using the in built flash as a commander. I built my kit from used components and ended up with four flash units instead of two. It's a nice system but I've nothing to compare it with.
depends on what I am shooting, If I have control over the shooting time, I prefer to set up mulitiple spot lights that are set up for exact position and angle.
I have been tempted to get one of those ring flashes, maybe this winter. otherwise, I like to tether my flash unit so, I can control the distance/angle again separate from the camera that is on a tripod.
Outside, almost never use flash except to occasionally flash fill.
Here is a link to building your own if you have an SB700....The components to build this would cost less then $50..
DIY DSLR Ring-Flash part 1 of 2 - YouTube
DIY DSLR Ring-Flash part 2 of 2 - YouTube
It's cold outside. I'm bored. Decided to fool around with my studio light and flash. This is the shot I took:
And this is the "studio" I shot it in. lol Fancy, huh?