Took delivery of the Deluxe AC128 last week, and am very happy with it. I've been looking for an AC128-based fuzz for awhile, but wanted something more tweakable than one simply with gain and volume. After searching for many weeks, I came across Mihail's fuzz on Reverb. From there, I found some YouTube videos demonstrating it, and was very impressed by the tone, not to mention the ability to adjust bias and the tone-like control, 'Smooth'. I ordered one off Ebay, and Mihail was kind enough to shoot a video of my unit under test - nice touch!
The fuzz can be dialed in to be thick and fat, or light and jangly. Bias gives you the dying battery sputter effect, but for me, it's all about the Smooth control.
Build quality is high and the unit is solid. Very professional. It's now my top fuzz, and I own about a half-dozen. I tend to use mine more as a mild distortion than an all-out high-gain fuzz, and this runs the gamut. Very happy.