Best site to manage a portfolio online

[balle]

I am looking to find a site on the web where I enter my trades and the site keeps my portfolio and give me nice portfolio metrics. Some of the things that I am looking for in terms of portfolio metrics are:

- returns
- annualized returns
- win ratio
- alpha (historical and current)
- drawdown
etc

I have seen one site (zignals.com)... but I think the site is slow and not very easy to use

Any other sites out there