Answer
The best platform is really a matter of opinion. Some like to see certain types of graphs & charts, others like tables, and still others like things like streaming video, RSS news feeds, etc.

So, a customizable platform, arranged the way you want, would be your best option. You can select the exact data items displayed, the size and color of any charts and tables you want, as well as things like heat maps and suggested trading strategies right on the screen.

Good platforms that can be readily customized usually come with no charges if you have an account with a reputable broker like Fidelity, Ameritrade, Schwab, E-Trade, and Scottrade.

Answer
I believe that most traders lose because of trades based on emotions and they do not have a proper money management plan and understand basic concepts such as forex margin and leverage. I would not say that technical analysis does not work but i would say that it is limited in what it does. I believe to win trade the forex market one should be disciplined, well capitalized, trade longer time frames and use technical analysis with a blending of heat maps such as what Mark described above.

To learn forex margin and leverage you can go to http://www.forex-margin.net

All the best,

Amit.