[GNC] GC Best Practices for Investment Management

[Jediator]

After dumping QB and using GC for couple of months, I started really 
enjoying its features and simplicity.  I noticed that a major feature in 
GC is the stock and investment management function, which I was 
hesitating to get into.  I'd like to hear from fellow GC users on the 
usefulness and best practices for using GC for investment management.  
Especially:

 1. GC was developed in the 90's before many brokerage firms offer
    portfolio management and analysis tools.  Is it really useful to
    replicate your investment data in GC from your brokerage account? 
    What are the advantages does GC bring in doing this other than
    calculating capital gain taxes/loss?
 2. What types of direct reporting functions in GC for investment
    management (Info in tool guide and online Wiki seems to be outdated)?
 3. How do you compare GC with other open source products (e.g.,
    Ghostpolio)?

Thanks a lot in advance! -- JC