In fact, to keep the litigation metaphor, you may not completely know what you have until trial itself. Cowles' system is interesting. It started out as a collection of WordPerfect macros. It then developed into a specialized, independent document assembly system. With Cowles one can spend 50 percent of the initial outlay each year on updates.
Cowles offers a money-back guarantee.
By the time you think about asking for a refund, you have invested time and ego valued far in excess of the program's cost. Nevertheless, it must be the solution that you need, one that fits both you and your practice. The best source of reliable information on software is a lawyer you know and trust, who has used the product. Although you should treat the commentary cautiously, it tends to be reliable. Probably few, if any.