Confused. One Doc tells me to take Belviq (lorcaserin) and one Doc tells me to take Adipex for weight loss. Which is more effective and my best choice?

Follow advice. A recommendation to a patient is made after getting a complete medical history, and frequently after exam. I would suggest choosing one of the DR's that you had the best relationship with and following that advice.
Understandable. Your confusion is understandable. When medicine doesn't have a good solution, you tend to see a variety of treatments offered. The 2 drugs work by different mechanisms-they're entirely different. Here's a 3rd opinion: they both have terrible potential side effects. I'm overweight and would never consider taking either one. I wish you well!