Soldato
The newer (Art+) are rather quick... almost up to the speed of decent Canon glass.
Enjoy
The lenses I've tried have all been from the new batches of lenses.
The 18-35mm F1.8 lens is in their Art range and the 120-300 F2.8 I tried was from their Sports range.
IQ was/is great on both of those but focusing always seems to leave doubts in my mind.