And surprise - My M80s shipped today!

While I await FedEx, may I ask the opinions of the Axiom forum members:

I have the following amplifiers available to me. Of the lot, which should I try first?

1. Emotiva Audio XPR-2 (1KW/Ch. @ 4 ohms)
2. Crown PS-400 (330W/Ch. @ 4 ohms)
3. Crown XLS-1000 (350W/Ch. @ 4 ohms - Class D)
4. Marantz MA500 monoblocks (180W @ 4 ohms)
5. B&O 1900 receiver (30W/Ch. - impedance not specified)

Please note that I do NOT listen loudly AND I will be crossing the M80s over to a subwoofer at either 80 or 60 Hz.

My opinion is worth exactly what you're paying for it!