If you decide to go with a discount brokerage, like Questrade, make sure you plan your move over. The brokerages often offer promotions to pay for transfer fees. I'm just saying this because you don't want to open an account, start funding it, and then plan to transfer the money down the road because at that point they will not pay for transfer fees anymore.
If you do all your banking with TD, it may be most beneficial to do your investing with TD Waterhouse Direct. Yes you will pay around $9 in trading fees when you buy ETFs, but if you buy in larger chunks (couple thousand $ at a time) that fee is negligible. Also, your existing relationship with TD may help in negotiating them to pay for more of your transfer costs. Even with TD Waterhouse you can buy Vanguard ETFs and follow the CCP portfolio of your choice.
Don't get too frustrated with your move because it will be tough. Bets are that every "financial advisor" you work with will do a hard sell on their products and the costs of leaving, some will even point out how much better their products do than the CCP. Just come armed with information because my bet is that your existing portfolio returns after fees are far lower that CCP returns since you started investing. My question to these advisors is: if you have products that have consistently beat the CCP, then why haven't you been investing my portfolio in them for the past X years?
Also, right now you are likely paying over 2% in fees every year. On $250k that's costing you $5k per year. Your savings will pay off in less than 1 year. This is also why your "advisors" don't want you to leave. With CCP your fees will only be $500 per year.