R1200GS TT Aux. tanks: Pros/Cons

[SQD8R]

I'm considering adding the TT aux tanks. and I'm wondering if those who have had experience with larger Aux tank can enlighten me on the pros and cons of a larger tank. Specifically:

1. How much of a factor is the bigger tank on handling?
2. Have you had to add an aux. fuel pump and the pros and cons of adding it.
3. Generally what do you think of the tank modification, was it worth it and would you do it again?
4. Problems working with TT?
4. Anything else?

Thx for your time and consideration.