Best option for Amp upgrade...


I have a McCormack DNA 500 that I like.  I'm considering spending about $4k to have it modded by Steve McCormack (SMC).  Alternatively, I could sell the DNA 500 for about $3k and have $7k to spend on a used (or new) solid state amp.  I'm inviting opinions on which would give me the best bang for the buck.  I'm hoping to achieve greater resolution and detail.  Bass control is not an issue!  Here is the rest of my system:

Pre-amp - CJ ET3-SE
Speakers - Rockport Mira II with REL G2 sub
Source - Aurender A10
Cabling - Transparent Ultra MM2 speaker, Gen 5 Super interconnects, Reference power cords (mostly) 

If you suggest a new amp, I'd be interested in your recommendations.  Thanks!


shoff
Thanks to all who have responded.  I appreciate those of you who warned me of about recouping the cost of the modification if I were to sell.  I am very aware of this and almost mentioned it preemptively in my original post.  In retrospect I think I should have.  10 cents on the dollar sounds about right!  I should also mention that I'm in my mid 70's and which ever route I go, this will definitely be my last amplifier adventure.  So, if a dubious financial investment yields the best sound, I'm OK with that!


To address a few comments and questions raised so far:

(1) The DNA 500 is more "powerful" than the JC 1's.  (500-900 wpc vs. 400-800)  Not sure how this translates to actual "current".
(2) All of my cabling is Transparent.  The interconnects are the latest Gen 5 Super models, and the tube in my CJ is an NOS 1960 Amperex.
(3) I do like the pairing of the CJ ET3-SE with the McCormack.  I tried a Manley Jumbo Shrimp and VAC before settling on the CJ.
(4) I will checkout the new Bryston.  Thanks for that and the other recommendations.
(5) I'm impressed with all the positive comments regarding the SMC modifications.  Sounds like a very good guy!





You have a very nice system- shoff
big fan of Transparent cabling as well. The Super and Ultra are sweet spots in that catalog of cables to be sure.
Happy Listening!
It doesn’t look like you have any power conditioning. Since you like your amp, I would call the cable company and check some from the library. It made a significant difference in my system.  With the money your looking to spend a ps audio power regenerator May be good. Or audioquest niagra 700. 
I don't know how you could do better, or as good, as wells audio. The innamorata is in your price range. I have one myself. 150w per channel of sweetness. Read the reviews