I drank the whole case over ~2 months and various stages of age and refrigeration. The verdict is that it was good, but not perfect. Definitely tasted like beer, and definitely got you drunk... but it had a certain "extra" taste that was not quite welcome.
I don't have the palette to describe exactly what was amiss, but it had a sweet taste hidden in it kinda similar to the way the malt extract smelled. Almost like it was mostly beer but with a bit of unfermented ME swirled in. Everyone enjoyed it, but I was sometimes distracted by whatever that was.
No idea if it was the sugar, or the stuck fermentation, or what. I thought it was good at the time, but it can't compare to the subsequent beer I made.