I've found a really good niche that has some great domain names left. However, most of the .coms are taken but there are still some great .net .us .org and .co.uk domains left. Have you had any success reselling these domains or holding them for traffic? Which ones, in your personal opinion, are the best. Hopefully this thread can help all of us make more informed decisions.
If you are a UK citizen then the obvious choice would be the .co.uk. If you are not a UK citizen then the .net would be the best choice.