Canon, Nikon and Pentax all make good DSLRs. As for which one to get: That would depend on what kind of bokeh you want. All cameras have some kind of bokeh, but it comes in different shapes and in some it's stronger than in others. For example, hexagonal bokeh usually comes from cameras with shutter blades, not DSLRs (unless you can find a lens with a hexagonal aperture and stop it down to f/5.6 or so).