Since I can get the lowest expense ratios simply buy buying ETFs, I have little interest in moving my accounts to Vanguard. I have a small account at Fido and everything else with Schwab. The Fido account is a solo 401k. Fido made the setup very easy, answers all my stoopid tax and andministrative questions, doesn't fee me to death, and all for a low 5 figures account. Interface is basic and commissions are a little high, but it works.
Since Schwab fired Potruck, dumped US Trust and stopped trying to go upscale by alienating all of their mass market clients, service has been (IMO) flawless. They do everything I ask, answer questions, bend the rules once in a while, waive fees, etc. Commissions are very reasonable, and if there is ever a real problem I have the name of a rep assigned to me in the local office (who politely calls annually, gets told by DW that her husband is in the business and "we don't want any," and leaves it at that). Their index funds are overpriced, but since I can buy ETFs with miniscule expense ratios, I really could care less.