Dear Investment Gurus (you know who you are):

Which brokerage do you use - or recommend - to invest in stocks?  And why?

Here are my needs:

I am looking to jump into the market soon.  I don't have much money to invest, just couple of thousands.  I am a beginner, so good research tool would be very helpful.  But I can't pay exorbitant fees, infact, I am looking only at the range of $7 to $13 per trade.  Basically, I am seeking the biggest bang for the buck. 

Can you recommend which brokerage account to open?

Thanks.