When I was still doing career consulting for lawyers, I chose The Highlands Ability Battery (THAB) as my tool of preference to use with clients. I went through the Highlands training and certification process and, over a number of years, used the assessment with many clients. Even though I no longer do this kind of work, I continue to recommend the Battery to others as the best tool around. When you learn your profile, you can make decisions based on your innate aptitudes, a key to job (and life) satisfaction.
Recently Highlands has come out with a version that is tailored to lawyers. You can read more about it here in the Summer edition of their newsletter. The article is titled "The Highlands Ability Battery and the Lawyers' Report." The article is written by Lazar Emanual, one of the owners of the company; both owners are lawyers.