I like Bas's approach lots of aggression and simple straight forward moves and also using objects as weapons. Not a big fan of his grappling stuff, but then again Im not a big believer of being on the floor in a fight. If I found myself in the floor I would do whatever I could to get back to my feet as quickly as possible.
DVD wise I like Lee Morrisons Urban Combatives to he easy to watch and use. Also I find that he comes across quite well on camera.