McCormack REV B upgrades. Better than a new amp?


I have read the testimonials about the stellar performance of upgraded versions of McCormack amp,especially the "REV B" level. A "used good condition" McCormack DNA-1 bought for 750.00, with REV B. upgrades added later is approx 1600.00 with round trip shipping costs. Would it make more sense to find a another amp that is newer, though USED between $1200-1500?? Also, do the McCormack upgrades hold up over time??
sunnyjim
I think in the used market you're better off waiting for a Rev A unit or better. Given the cost of these units on the used market vs. buying one (new or used) and upgrading it makes buying an already upgraded amp a great bargain. I'd skip Rev B and get either a Rev A or Platinum given the discount on the used market and the significant upgrade in performance. Best of luck.
Oh, forgot to answer your question about reliability. I'm the third owner of my 0.5 Rev. A and have had it for 14 years with fairly heavy use. The only thing I've had to do is replace a fuse, and as far as I can tell the amp sounds the same as it did the day I got it. Steve's also great about support if ever needed.
This is a little OT, as the only McCormack amp I ever had was a stock 0.5. Very nice sounding amp "as is" IMO.

Here's the thing: that DNA 0.5 I bought used arrived with a lot of damage, as the seller had used ridiculously poor packing. The whole case was "curved". I figured it was DOA, but hooked it up, & it not only worked, but sounded great (!). I sent it back, but I'm looking for another......
I had a DNA .5 delux and wish I still had it. I bet the Rev A and B are great sounding.