[Collins] Suggestion of best 75A receiver for AM reception

[John King via Collins]

 Which of the Collins 75A1, 75A2, 75A3 and 75A4 communications receivers is the "best" station receiver for amplitude modulated amateur radio reception? Is there a commonly accepted conclusion held among Collins receiver owners? The narrower bandpass of the 75A4 receiver might give it a negative for AM reception and an advantage for SSB reception??
This is a serious request for input and your input based on personal knowledge and experience will be greatly appreciated. Thanks and 73, John, K5PGW