Here at the depot, we currently have two fields of lighting equipment: the battery powered flash unit, and the AC strobe unit. If you're shooting something where you can't be plugged into an outlet and can't have lights set up on dedicated stands (I'm talking night photography, indoor events, stuff that requires portability) then you probably want a flash. If you are doing fashion photography, or staged portraiture, anything where you're indoors and have the time to set up lights, I'd opt for an AC strobe kit. The strobes have a much higher output than the flashes, and are a really great lighting solution. Ours are also relatively portable. Think about it!
FLASHES
This is the Minolta Auto 200x. We have one of them. It's a pretty basic unit, with no ports for synchronization, and so it must be mounted in a hotshoe.
This is the Sunpak 383. We have two of them. Also a pretty basic on-camera unit, aside from the fact that it has a Sunpak Mono miniphone port for synchronization, which makes it a candidate for use with cameras other than SLRs with hotshoes.
This is the Sunpak 544. We have two of these as well. This acts as a nice midrange between the on-camera flash units and the AC strobe. It's extremely controllable, and has a higher output than the smaller flashes. That said, it cannot mount to a hotshoe, and must be synced with a cable.
The 544s come in a kit with a diffusion gobo and a potato masher mount, so you can mount the flash right next to your camera.
We also have two of these big Midibounces to bounce flat white in a big spread.
ALIEN BEEs
This is the Alien Bee B1600. It is the only AC strobe unit we have. It has a very high output (28,000 effective lumenseconds!!!!) and is easy to use and portable. We have three of these units divided into two kits. Depending on the nature of your project you may need one or both of these kits!
The one light kit comes with one B1600, the protective front cap, a steel collar, a power cable and one extra long sync cord.
The two light kit includes two of everything the one light kit has.
We also have many of the appropriate cords for all of the aforementioned lighting solutions. Since those cords depend upon what type of camera you're using, know what cord you need so you can ask us for it, because chances are, we've got it!