Being angry about being sold a particular investment is not a good reason to dump it all without regard to tax consequences.
There was a time when American Funds were the best deal out there, back when the mutual fund industry was in its infancy. Some highly principled and knowledgeable managers run a number of their funds, and those funds have performed well for many years, even after operating expenses. However, in the current market, few people would voluntarily sign up for these funds because of the sales load and the ability to get similar performance elsewhere at a much lower cost.
In the OP's shoes, I would transfer the IRA's, before or after selling the funds, depending on the cost, to the chosen custodian. The taxable accounts require more careful planning that takes taxes into account. I would look at the numbers and develop a strategy for these investments as part of an overall investment policy. If the OP's goals include simplifying account management, then moving these funds to Vanguard might make sense.
Keeping these funds or liquidating them efficiently over time are something the OP needs to consider carefully. After 7 or 8 years, the capital gains tax implications of just selling and transferring the proceeds may make that a poor choice.