767 / 757 winglets
I fly mainly 757s but the effect is in my opinion very similar,
No noticeable handling differences in normal flight
Gusty X- wind landing more challenging, the wing still flying at 60 knots.
Performance very different particularly clean at low speed 220 knots thrust levers closed less than 1000 fpm rod.
Non of the FMCs appear to be able to compute a VNAV decent out despite have been modified !
Hope that helps