You are right. Plano does have an unusually higher number of cops per capita then the other Dallas burbs. Keep in mind Plano is the wealthiest City in the country with a population over 250,000. The US median income for 08 is $50,000 while Plano's is near $85,000. Someone needs to protect that wealth.

Most of the force could care less about catching someone with a small amount for personal use - unless you are under 18. They will haul your arse off to jail if you are under 18.