Ultrasound techs!

Is anyone on here by chance an Ultrasound tech? I am currently a medical assistant and I work in a hospital as a CNA. I have been interested in becoming an Ultrasound tech and wanted to know what it's like. Is it a fun job? Do you enjoy it? What types of things do you do on a daily basis? Is the pay and benefits okay? Is it a very taxing job on the mind or body? I'm just looking to get out of being a CNA as my back is killing me after every shift and I'd like something a little easier on my body. Any input is greatly appreciated.