Good quality: WTI is considered a "mild sweet" crude oil, which can be easier to refine, while Brent is really a mixture of crude oils, including each "light-weight sweet" and "significant sour" grades. Screening is by references that POs talk to one another for, not by posted critiques or from https://directory-king.com/listings13233110/the-fact-about-outcall-massage-that-no-one-is-suggesting