I would not spend big bucks for a high powered amp unless you really want to damage your hearing listening to concert level music/rock.
buying of a 'high quality' amp goes well beyond doing so to damage your hearing. A quality/capable amp need not cost 'big bucks' I agree.
Buy a very good amp/receiver that sounds good to you and doubles at 4 0hms and you will be all set. but that is my humble opinion. Your mileage may vary!![]()
and there in lies the rub, few(if any) 'very good' receivers are capable of doubling down.