Re: Auditing or Tax?
There are only two things in life that are certain - death and taxes. Since you are not likely to be in the business of death, so taxes is probably the only other certainty left.
However, choice between auditing and tax is very interesting. Most people know intuitively where they want to be. You don't. That makes you interesting.
Here is the deal. In auditing you deal with clients, apply professional judgments, interact with your team and document your findings. You have to be a people person to be in auditing, because you can not do it in a vacuum.
In tax, you have to deal with the tax code, come up with creative solutions (not too creative, I hope!) and deal with clients in a more hands-off manner. You can be a pretty average people person and still be quite successful if you know your stuff. Tax accountants are deemed to provide more value (tax savings!) to their clients, as opposed to general auditor, who are some times deemed as a commodity.
Tax codes vary from country to country. Your mobility (from country to country) will likely be limited if you are in tax. While audit is audit and is pretty much the same all over the world (with slight differences). So if mobility is important for you, tax is not the way to go.
If you are good, then both lines of work will lead you to a fantastic career from a money stand point.
Hope this helps. If you have more questions... shoot. It will help if you tell us which part of the world you are in.