Ken, you wondered about a windscreen for the BushBuddy. Here's what I carry. Not quite as light as titanium, but very environmentally sound.
Seriously, though, here's my take on the Alcohol/Esbit/BushBuddy trilemma, since I've used all 3 systems. I agree with the answers provided so far, and add the following observations:
ESBIT: In spite of what you may have heard, Esbit fuel tabs can be extinguished when the cooking is done, and the remainder used for future cooking. Esbit also has a sweet "feature" which is that it burns hot for the first 5 minutes, then simmers for the next 5. This is useful for bringing water to a boil, adding pasta & sauce, then simmering for 5 minutes without scorching. Alcohol tends to burn 100% then almost instantly extinguishes.
ALCOHOL: my favorite aspect of alcohol is that you can get it almost anywhere. For long through-hikes, Esbit requires careful pack-at-home planning of all fuel use. If you decide mid-trek to add a weeklong detour loop, you just buy more alcohol. With Esbit you're kinda screwed at that point. I also like how cleanly alcohol burns - no sticky pot bottom from Esbits or woodfire.
BUSHBUDDY: My current go-to stove. For me the BB is all about aesthetics and flexibility rather than efficiency. I consistently find that cooking with the BB takes much longer than white gas, alcohol, or Esbit, so if you're a high-mileage maximum-efficiency freak, I don't recommend it. I love the process of gathering wood, breaking it into small pieces, laying and lighting the fire, and stoking it later for a second cuppa after dinner. I love that it continues to simmer for hours so you can warm your hands over it. I love that fuel planning is a non-issue so you can drink as many cups of hot tea as you want without worrying that you won't be able to cook tomorrow's dinner.