I have an android tablet and love it. Many of the companies are slowly coming out with applications but you are limited. Now, as for the iPad, there are applications but they are geared towards the client and not the agent. The agent's main link is the web and with some of the browsers used in the android operating system they have problems. If you have not purchased a tablet yet and you want the android, I would make sure it has Andriod Honeycomb 3.x. Honeycomb is designed for the table and not for cell phones. All earlier versions are desgined for the cell phone only and have a hard time working on tablets. I have the Acer tablet which has worked very well for me.
The iPad is a great device but you run into limitations because you are unable to print on it and some Adobe products do not work on it. However, with the android you are able to print and flash does work on there. But, you do run into issues with the browser. You would think since Google owns Honeycomb they would have a browser but they do not as of yet. But with the iPad you run into the same problem with connection to websites due to the sites not working with Apple's Safari browser.
I would try them out in the store. See if you can go to the website there. I have used my on a limited basis as of yet knowing it was new technology in regards to my business. Many of my companies reps have come by asking me to try out their sites to see if it will work. I am going to be working with several of my companies IT dept's to see how things work as well. So, they are trying but it will just take time.