Simon,
I do not own a 1070 but I did audition one. I was impressed with the amp. Full of features, great build quality and sounded really nice. On the analytical, punchy side I would say. Great bang for the buck. I almost bought it along with the matching CD player. Only reason I didn't was that I was able to pick up a used Creek 5350SE for under a grand. I do not know about the 370, however, the reviews seem to be pretty good as well. So are the reviews on the 540I CD player. From a build quality perspective (which is important to me), the Rotel is definitely better. Can you find a dealer that has both and audition?
Matty