I've been wearing versions of the Prologo for many years and found the 5 and 6 both to be excellent shirts, that fit well without being too restrictive and provided good aero qualities, yet stayed in place when vigorously riding.
Unfortunately these shirts are a departure from those and not in a good way. The biggest drawback is they run 1-2 inches shorter in the length and don't stay in place below my waistline as previous versions did. Torso fit is a little looser, which can be considered a good or bad thing, depending on your perspective about desiring aero quality and/or not having flapping jersey material when riding hard. These also don't have as much hem gripper elements as previous iterations did.
Quality seems to be as good as previous versions so far, having held up to multiple washes over the two months I've had and used them. On sale these are a decent value. Worth noting these are more of an open mesh style than previous generations were.