I am looking at getting a G20 gen 4 in 10mm, possibly the G40. I might use it as a night stand handgun after I get comfortable with it, but until then it will be a range gun. What I really would like to know is how you tell the difference between the lite loads and the full power ones. Is it just a matter of looking at feet per second and bullet weight? What are some good home defense or practice rounds for the 10mm? If you have any other info it will be appreciated. Thanks in advance for the help.