What are the differences between an alcohol induced DWI and drug related DWI charges?

Defendant was charged with DWI and damage to utilities.

Client charged with resisting arrest after leaving a country western nightclub and was pulled over for running a stop sign, client is in medical school. Obtained copy of police video of stop and showed it to DA. Client was manhandled by police officer, Case dismissed

Client charged with DWI, negotiated plea bargain agreement for obstruction of highway

Client charged with felony DWI 3 or more, it was actually his fifth, on probation for DWI in Missouri, case plead down to DWI 2nd, the client elected to do 30 days in jail instead of probation.