i really like the new turrene. From the mods i've seen, it looks like it forms to the body a little better than the speedy b. Very pretty bag, thanks for the comparison.
I have a Turenne mm and I love that bag.
Personally if you wear the bag Crossbody then I think the Turenne looks better. But if you wear it on your shoulder and on your arm then I think the speedy looks better. When I tried on the speedy b25 yesterday Crossbody I didn't care for the way it protrudes out from my body without the bag flattening. Have fun deciding at the boutique today!