Please rank these amps

Please rank and let me know your thoughts on the following amps:

- NAD 2200PE

- Schiit Aegir

- Threshold a400

- McIntosh MC250

… using with an Audible Illusions Modulus L1 pre and several different speakers including Zu Audio ODW II and several other small, lower sensitivity higher end monitor speakers (Dynaudio, Usher, Revel, Totem, among others)