The Wacom Bamboo is intended to be used for freehand writing, annotating and navigating. However, the Bamboo is not as appropriate for digital sculpting or painting applications as the Intuos 3 products. The Intuos tablets have many more features (more levels of pressure sensitivity, tilt, rotation, support for different types of pens, so on). The Bamboo is a much simpler model designed for more casual users.
Furthermore, the active area is quite tiny (147.6 x 92.3 mm or 5.8 x 3.6 inches). This would make digital sculpting tedious in my opinion. My hand cramps up just thinking about it. I prefer larger tablets. I currently use an Intous3 9x12, but I’ve also owned smaller tablets and would never go back to anything smaller for graphics work.
Of course, the difference in cost is considerable. If you can’t reasonably swing the cost of an Intous, I’d recommend searching for a good deal on a Graphire3 6x8. While still not as robust as the Intuos line, nor as cheap as the Bamboo, it’s more suitable for graphics work by virtue of the larger active area.
I’ll be interested to hear others’ opinions on the matter as well.
Best of luck to you.
Djembe–