With retirement a mere 35+ years away, I'm looking into opening a Roth IRA to supplement my 401k. With so many different brokerage firms out there I'm at a loss as to who to go through. Since my 401k is already with Fidelity, I was thinking that might be the way to go. But is it a good idea to have all my retirement savings tied up with the same people? Any advice you guys can give me on where to put my money would be great.