First thing to consider is the battery life. Of course, you would want a unit that does not consume or drain the unit’s battery right away. Go for one that uses minimal power especially when put on hold or when not in use. You can also opt to get a portable iPad charging station which you can bring with you everywhere you go.
Accessibility is the next thing to check out when buying a tablet PC. Since you would be using this for work, you need to have it connected to a Wireless LAN in the office or to the Internet when you are mobile. Also, the documents that you need for your presentation should easily be transferred to and from the source which can be done easily if you have a Thunderbolt cable. This will allow you to transfer files in a short period of time. This is also convenient if you do not have the means to transfer files on air.
Other options you can check out are if your tablet support external peripheral devices like stylus pens and external keyboards. This will help you a lot especially when you do a lot of encoding through your table. It can be quite tiresome to use the screen to type in the information so having an external keyboard would really be a big help.
These are some of the considerations you can weigh upon when choosing your tablet PC. You can opt to get an iPad charging station and
apple Thunderbolt Cable to go with it so you would not worry about it running out of batteries. This would be a good bundle for a busy person like you.