Shot one, the bodies are both cropped wrong, look more in the photo tips here, my books and at http://www.lensdiaries.com
for proper cropping techniques. The subjects are too close to the background and the lighting is off. Image two, lighting is not that great, the cropping is bad on the the subject sitting on floor, "Above the knee or above the elbow, otherwise you have an amputee look." Note: Not making fun of people with disabilities. Again, read the rules of cropping as noted in image one.
On Alien Bees--I would never buy lights from that company after the CEO made what I consider racist remarks about me and others, see this post: http://rolandogomez.net/2007/10/no-n...-industry-ceo/
Go with something like Dynalite or Hensel. All the best, rg sends!