between those two options I would go for the Dell without a doubt. A much faster processor and bigger monitor. The "free" camera and printer will not be of much value. Running costs are crucial when choosing printers. The monitor you will be using constantly, the camera only occasionally. If you are serious about photography then you will need to spend at least £200 to £300 on a digital camera.
Dell have also got a better reputation for customer satisfaction than Tiny who went bust and were bought up by Time if I remember rightly?