HRM??

Options
Okay so I have been looking into buying a heart rate monitor but I have no clue what to buy. I have been shopping around on amazon and checking out reviews but they are so back and forth on whether or not they are worth it. I want one that can be use to estimate calories burned and a pedometer would be nice but not a necessity. I would also like to not spend a fortune!!! Any advice on what brand to type to buy???