I've been using the 10 degree head paired to a Tour AD TP shaft, and the big adjustment for me was dialing in what the right tee height is. The reason this has been difficult is because the SIM1 was such a shallow head, so naturally I felt that I should tee the TSi3 higher because it's a deeper face. That led to a lot of high floaty drives. I have since gone back to teeing the ball down, and with the 10 degree head and a lower tee height looking to make center to lower half contact, I'm really enjoying the consistency with it.
I'm still very curious about the ESTDLS, but the TSi3, teed down, gives me a really flat consistent ballflight that doesn't look great, but is really playable. I am worried about what happens when I play in wet conditions though.
Still have a velocore ventus sitting here but the AD TP is too good to change for now.