I had the original Slant and recently picked up a BP Slant. I love it. The first shave with the original was super close but I had some nicks. I used Olive Oil Soap and AOS unscented for a superlather and the Merkur blade.
Subsequent shaves with the BP, a Derby and a gentler touch have proven phenomenal. I'll eventually try Crystals and Feathers as well as straight soaps and creams with it.
The Slant is the only razor I can cleanly shave under my chin, where it begins to curve to the neck without any nicks or cuts. The hair grows in several directions and other DEs require more passes.
Yeah, we use DE's to save money. My money savings. Let me show you them.