Occasionally, I've not done any side-by-side comparisons but I can't see a significant improvement with the filter-specific burrs. Oddly enough, at very coarse grind settings, the filter-specific one produces a lot of fines (much more so than the original one). I'm not convinced it's worth the £30 personally. Do need to have some proper side-by-side comparisons but the regular burr is perfectly fine for filter brews
Occasionally, I've not done any side-by-side comparisons but I can't see a significant improvement with the filter-specific burrs. Oddly enough, at very coarse grind settings, the filter-specific one produces a lot of fines (much more so than the original one). I'm not convinced it's worth the £30 personally. Do need to have some proper side-by-side comparisons but the regular burr is perfectly fine for filter brews