If they love current, then tube amps could be the better choice. Though, having myself owned 1.7is with a Halo Integrated (mk1), I can tell you it's a good combo and the Hint has plenty of grunt. It won't produce the "bloom" of that MC275, but no SS amp will. You'll trade some tube sweetness for an all-in-one solution that is nothing to scoff at. Those Maggies should also benefit from using the Hint's bass management to cut them off from the lowest octave.
I think the biggest mistake you could make would be going with the Peachtree.
I think the biggest mistake you could make would be going with the Peachtree.