High Current SS amps with input impedance = 200K

Here are the leading contenders for the position of amp in my main system:

1) Wyred 4 Sound st-1000 or sx1000, best value, 500w/ch Class D offers potentiall best overall dynamics in my price range, 60K ohm input impedance, reported best of class results by OHM guru and fellow agoner Mamboni

2) Musical Fidelity A308CR, similar to what I have, 31K ohm input impedance, 250w/ch local seller, can audition in my system, 60+ amps current deliver (total for both channels I'm assuming

3) Musical FIdelity A5CR, similar to A5CR but significantly higher current delvery based on user guide specs, none available currently but I am not in a rush and could wait.

Is anyone familiar with A308CR versus A5CR that can offer insight on what all is different?

4) Larger ARC SS amp, D400 or 300.2, 150Kohm input impedance, 200 w/ch or so , I would have few reservations trying out other ARC gear that can fit in nicely with my pre-amp and the OHM 5s.

All thoughts welcome!

THanks

I once thought I was in love with ARC D400, at least on specs. . . until I heard it. . . and my ears started to 'bleed'. Am I ever glad I did not buy it without auditioning!G.

Interesting reading. Several of us made this mistake when starting. This is an excellent lessons learned for new audiophiles. Why don't A'gon create a lessons learned folder entitled "Audiophile 101". I learnt the expensive way.

I'm currently using a Burson AB-160 buffer between my McCormack DNA-500 amp and VTL preamp. I'm waiting for it and associated cables to break in and sonics to stabilize. I'll report back with developments after it gets some significant hours on it.

Foster,

Yes, it will be interesting what that device might do in your case. On paper, the VTL and McCormack appear to be a pretty good match. The DNA 500 is the only other (non Class D) 500w/ch amp that I have considered to-date.