What is the best protein protein for the buck?

There are so many to choose from, Pro-NOS, Muscle Tech, Muscle Milk, GNC Whey, Optimum Whey, and Isopure. I've tried a little of each. I am 28, sit behind a desk all day and eat pretty healthy. I was in great shape while in college, plenty of time to workout and play. These days I'm a desk jockey and find more excused not to workout. I've decided to get back into the swing and raise my self esteem again. What's best, I wouldn't mind cutting some weight in the process. I'm 6'1", 215 lbs, athletic build that needs to be trimmed. I normally skip breakfast, have coffee all morning, 2 cups, lunch from Subway or salad and then dinner consisting of grilled burgers, chicken or hamburger helper, chicken stir fry, etc. I do have a generic men's multi-vitamin. Any suggestions? What do I need to get this off on the right foot? Its best for me to workout 3-4 days/week at the most. If I could sprint or do cardio 2 days and lift two days using a total body regiment, that would be ideal. Give your suggestions on eating, protein shakes as meals and a workout to get me motivated. Thanks!