This can be heavily debated. I heard the drum machine and I thought it sounded like a drum machine. While maybe in a different price class the modern drum sample possibilities make the old synth style drum machine sounds obsolete when real drums are desired. EZ Drummer, Drummer Superior 2.0, Addictive Drums, BFD2, etc have all raised the bar at prices that aren't bad.the BR-600 has a high-quality drum machine built in.
If you need real drums and a flexible sequencer, this isn't the route I'd recommend, but that is up to you and how important the drums are. A simple audio interface with Cubase LE bundled and any of the drums sample packages mentioned above is an extremely powerful combination. As long as your computer can handle it, you'll be in at a very reasonable price.