I think you should supply a few more details on what speakers you have, what kind of system or features you're looking for, things like that & there's a better chance people can help
Just throwing out some models you've considered w/o anything else to go by makes it hard to respond. And everyone will come back with their own personal favorites anyway
Like me, I'm a Pioneer Elite owner, have been for many years, and liked their class A/B amps, their Ice amps and the new class D design
And I don't know how to respond to what you posted
It's like you threw all the options in the air & looking for someone to sort out what you want. No one can do that. And not many are going to take the time to go over every model, feature by feature with you. Are you at the starting point or do you have some idea of what you're trying to achieve?
For example, do you like Yamaha's ypao or not? if you want help, you have to give people something...likes, dislikes in your Yammie, what you want to change or improve?