One caution I would like to raise is that a true authority on amplifiers has recently asserted to me that he can demonstrate how big solid state amps turn bright when they are current starved.
If the IC recommendations do not pan out for you, try looking at whether you are not providing the amps with enough good clean power.
If the IC recommendations do not pan out for you, try looking at whether you are not providing the amps with enough good clean power.