Not sure if you are still looking for recommendations.
The ruby nail file as mentioned above is a great file, but a standard glass/diamond file is more than sufficient.
I also recommend their nail kit that includes the glass nail file along with the micro-mesh. I have been using those kits for a few years with great results. The Oasis nail shaper is ok, it is good for a quick buff, but mine did not last very long.
Also, I would highly recommend moisturizing your hands regularly, especially after washing your hands or showering. I do this in conjunction with using Burt's Bees Cuticle Cream.
If you are having more serious problems (splitting/chips) I would highly recommend Nailtiques Formula 2. It will strengthen your nails very quickly, but has a gloss finish, which I personally do not like, but it always delivers the results I'm looking for. Particularly useful in the winter months.