In addition to being knowledgeable and experienced in DUI matters in Philadelphia, it's important that the attorney you select is successful. Ask about previous clients, the outcomes of some of those cases, what they think the outcome can and will be for your case, and more.
Of course, a DUI charge cannot be dismissed or reduced every time someone is charged with a DUI in Philadelphia. However, you do want someone who can at least point to dozens of examples of successful acquittals or substantially reduced charges.