Odometry using IMU and Encoder

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Hello everyone !

I want to make a robot to doing path following using Rbiz. So i need to control the odometry, that's why i'm asking for an advice. What IMU and ROS node you would recommend me ? Please, not so cheap. I saw that MPU 9250 or 9255 are expensives, how about that ?

And then i want to combine IMU data with wheels encoder data.

What i want to do is to localizate the robot at any moment using IMU and two wheels encoder, and show it in rviz.

Thank you !