Be extremely careful when dealing with judges. Most are former prosecutors. Most cases are settled prior to trial. Reasons include the police being mistaken, or the poor maintenance on their equipment. Sometimes you just get lucky and fall through the cracks in the system.
Lawyers are good at what they do, and sometimes, they can work miracles.
Crimes are classified as misdemeanors, or felonies. Misdemeanors are not minor offenses. The potential liability to your liberty and property is substantial in either case. Insurance Rates DUIs stay on your record for 10 years. If you lose in court, or at your DMV hearing, you'll need an SR-22 certificate which you'll have to request.