Favorite Brokerage?

[Kerim]

I've been asked for brokerage recommendations, but I only use and know Vanguard, so I thought I would get ideas from you all.

I gather that the account will start out in the $50k to $100k range, all in a taxable account. His priorities are cheap stock trades and excellent and easy to use website/user interface. Good access to mutual funds would be a plus also.

So who do you all use and recommend?

Thanks!