Al,
This is one of the most frequently asked questions regarding carving. I agree 100% with what Jim said relative to full size tools. Also, that the method you use will dictate the type of tools.
I recently did some carving for a S. Lauck inspired piece and did it with the least amount of gouges I could. I didn't do it to show I'm Joe wood carver (I'm not), I did it to demonstrate that decent results can be achieved without spending a lot of money on 40 different gouges.
Having said that, I basically used four tools. A small, fairly tight radius gouge, a little bigger fairly tight radius gouge, a wider, shallow radius gouge, and a 3/16" skew. The wider radius gouge I "picked" from an antique store for a couple bucks. I then used two flat chisels to remove wood and create the raised wood carving.
Obviously, this is for raised carving. For incised carving (what Jim was talking about relative to method), you would need different tools. The longer lines, both straight and curved, were stabbed with the skew. Actually they're stabbed by rocking the skew back and forth using my thumb as a fulcrum.
Hope that doesn't muddy the water too much, and makes some sense....
Ed