I'd like to know what the difference is between the two? I'd like to buy one eventually, because I didn't get one this year. I want it soft, yet with backbone because I head lather. I'm unsure on what size diameter, whether a 26 or 28. For reference sake my current favorite brush is a Semogue SOC cherry boar. It has a diameter 24 mms and a loft of 55 mms. I'm guessing the 26 mm as it also has a loft of 54 mms for the Thäter. Any input would be greatly appreciated.