Answer:
Possibilities of less jail time served. You may be able to enter in a program to be able to keep your driving priviledges, which can also keep your job to be able to pay your fines and go about your daily business.
There is always a benefit in hiring an attorney to represent you in any case where you have violated the law. An attorney who specializes in such cases knows the alternatives and what to ask for on your behalf. They know the court and know the judges. That is extremely helpful when presenting a defendant's case.
However, it is also important to ask around and make certain you hire a good advocate with a good record and good reputation. Lower court matters are a magnet for lawyers who take the easy way out but there are many fine ones who can help you minimize the penalties and get a second chance.