I am just trying to figure out what makes a most of the cheaper drams a bad whisky compared to SMs. Not from a taste point of view, SMs are way ahead in this regard. I am trying to understand why cheaper drams have more bad effects on the stomach and give hangovers.
I have been on SMSWs for over two months now and I notice SMs are way too smooth on the palate as well as the stomach. Even if I were to overindulge a bit also, there are no hangovers as were the case with cheap drinks. I drink SMs with about 1/5th of water where as other blends and cheaper whiskies of old times where watered down liberally, but still used to burn the stomach, palate and give hangovers when in excess. So I was wondering what makes aged SMs better?
As I understand each of the following factors contribute to how the dram behaves. My musings on them:
Alcohol - If anything SMs have same or more alcohol (abv) compared to cheaper blends. Laph QC has over 56%, still goes down smooth. So what makes SMs smooth?
Distillation - Vodka gets triple distilled, still I am more likely to get hangover from vodka. So what gives?
Age- How does age mellow the dram? Do alcohol change in composition? I believe it doesn't. What else aging do?
Congeners - What role do they play vis a vis blends/cheap drinks and SMs. Do they add flavour or they contribute to hangovers?
Malt/Grain - Do malt make a better alcohol? I keep reading recommendations for avoiding grain whisky. Do grain whiskies age differently compared to malt? I believe American whiskies have less malt, but I am sure there are god American whiskies matching SMs.
Cut - Ok I get this point. A good cut ensures the best of spirit goes in to the dram. Cheaper drams may be compromising here.
What are the other factors contributing to a better dram?
Assuming other parameters like proper hydration, proper eating and rest are taken care of, what makes a good/bad dram? Your thoughts please.

