FWIW, I go back and forth on the sugar issue. I "tested" my ale last night while I was brewing, and found it to be dry enough to my taste. It had a nice balance between hops and malt, good attenuation, the copper color that I wanted. ABV was 5.6% and I could not taste any alcohol. It should be perfect for my party in a couple of weeks and fortunately, I'll be away for a couple of weeks, lol.
I think that I got the result that I wanted by following these guidelines:
1. Mash at the lower end of the scale and control temperature.
2. Stir plate, pitch at the proper amount, ferment at the higher end of the scale (London 1968 @ 67F), and control temperature.
3. If you have soft water, like I do, add the appropriate amount of gypsum to bring out the hop bitterness.
So, The next time that I make an ESB, I am still going to try adding 8 oz. of sugar at the end of the boil, but I'm 98% happy with this recipe as it stands.
My first attempt at a pilsner using a tri-decoction method was an epic fail (the mash would not convert), but I learned enough about my process to see what I need to change and will try again in a couple of weeks. I'll let you know how the bitter tasted on the 23rd.