May be I can share with u some opinion.
For 會計軟件, there are really a lot in the market and the price stating from several hunderd to even more than hundred thousand.
For the company like yours, the main feature you must have is the project cost accounting. Other area you have to consider like how many users you are going to use, is your boss love to have graphical analysis report and ad hoc report, etc.
The most importent think is the budget your company willing to spend.
Even for accpac only, they have diff. edition which suitable for diff. requirement.....cost from several thousand to more than hundred thousand.
If you don't want to spend much, you may consider some local developed package too.
As i know several Finance management packages, if you really want to know more, please pm me.