The SP Systems Excalibur 6400 Lighting Kit includes a pair of 640 watt second monolights, two white umbrellas, a pair of air-cushioned light stands, and a sync cord for camera connection. This relatively light but strong set solves many lighting needs, providing light that's properly color balanced to the normal daylight setting of digital cameras and strong enough to stand on its own for many jobs. It can also work with other flashes as a slave. SP's Excalibur series monolights are well known as affordable, fully featured strobes for beginners and advanced amateurs.
With 1280 w/s of total output, this kit's sufficient for tabletop work, portrait work, and even group shots of several subjects. You'll be able to compose easily with the output of the built-in modeling lights, and the flashtubes can be replaced easily.