Hi, my advice would be to forget any of those mentioned above and look for a Pass Labs. INT-60.
It is on another level and capable of extracting every last ounce of performance from your speakers. It will generate heat and likely be physically larger than either of the two you've considered, but is superbly built and you won't believe the sound quality whether you play at low volume or giving it the full montey.
I've had Musical Fidelity for over 20 years and extensively modified and upgraded them (and helped others do the same), yet wouldn't draw a parallel with the Pass.
If you're patient you should be able to obtain the Pass second hand for not much more than the new cost of the MF you mentioned.
US built and an excellent company to deal with.