I test drove the 2019 SL6 and liked the bike plus it was on sale. Then I read this thread and the new bike having the T47 bottom bracket, the storage compartment and the ability to take larger tires, changed my mind. I had the Trek store order my size and I am test riding it next week when it comes in. Even though the bike is $750 more, I think the T47 alone is worth spending more. Looking forward to the bike coming in. Hopefully next week I will be a new owner of a black SL6.