I first heard of Walkers Smoky Bacon Flavour Potato Crisps from my friend Khary who claims that they do taste a lot like bacon. The texture is exactly like a Lay’s potato chip and while they do have a meat-tinged flavor to it, I'm not sure I’d call it bacon-y. When you open the bag it almost smells like BBQ flavor—they definitely have a smokey smell and taste.
Smiths Bacon Flavour Fries were actually pretty tasty—probably my favorite of the bunch. They are perfectly salty with a hint of sweet bacon. They even look a bit like bacon...
Wheat Crunchies Crispy Bacon Flavour Crunchy Wheaty Tubes look kind of scary... Resembling something like a dog treat, I expected them to have a fairly meaty flavor. They were indeed crunchy and wheaty (as the name suggests) but the flavor was rather bland and didn't come close to tasting like bacon.
Red Mill Bacon Streaks Cereal Snacks have an interesting texture—kind of light and airy but sort of saturated with oil at the same time. These had the most bacon-like flavor... but I can’t say that I really enjoyed them.
In conclusion: I prefer the real thing.