I tried the Levinson 432 and found the 336 to be much much better to my ears (eventhough the 432 is rated at 50W more power). I was honestly un-impressed with all the 4xx series that I listened to (I heard all the current 2-channel 4xx's).
I wouldn't hesitate to try the 436 mono's however. I have also heard that the 3-channel Levinson (433 maybe?) is a very good sounding amp - but is lower powered.
To me - I still think the later 3xx series (334/335/336) are tough to beat.
My experience with Krell is that they are superb in the lower frequencies - but I didn't care for them otherwise.
No experience with the Mcintosh or accuphase.
Hope that helped a little good luck.
I wouldn't hesitate to try the 436 mono's however. I have also heard that the 3-channel Levinson (433 maybe?) is a very good sounding amp - but is lower powered.
To me - I still think the later 3xx series (334/335/336) are tough to beat.
My experience with Krell is that they are superb in the lower frequencies - but I didn't care for them otherwise.
No experience with the Mcintosh or accuphase.
Hope that helped a little good luck.