I've had all three iPads. To be honest I don't find the new iPad's display a reason to upgrade. I do however think the 1gig of RAM and (for me) LTE well worth the upgrade. To be honest my iPad 2 had some low memory issues that came about with IOS 5.0. 5.1 fixed some but not all of the crashes.
Yoi're going to have to try to figure out how you think you will use it and unless you've had an iPad previously that's hard to do.
The questions I would ask myself are:
1). Will I have access to a cloud storage facility most of the time if I need to retrieve documents I need for business? If yes, then chalk one up for new iPad.
2). Do I plan to carry around a lot of media because I travel or need storage because I can't access iTunes on my computer when I need to in order to change out my media? If yes, then chalk one up for ipad 2 and more storage.
3). Do I plan to resell at a later date? If yes, then chalk one up for the new iPad which will resell much easier and fetch a better price.
4). Do I plan to plan some pretty intensive games? If yes, then go for the new iPad due to the 1 gig of RAM (vs 512 in the iPad 2).
5). Do I plan to keep this device for at least 2 years? If yes, go for the new iPad. The iPad 2 is a good device but is now 1 generation old. Sorry, but the lack of memory (512) will begin to hurt the device more and more as apps get RAM hungry. And this will happen. Always does.
Good luck. I expect you'll be pretty happy whichever route you take. Each has pluses and minuses.