My brother got a pair of Line Blends, I got a pair of Vishnu Wets.
The Vishnu handflex, especially right out the box, is stiff. The blends are fucking soft right away.
But by no means are the Vishnus stiff. They are so soft when you ski, and they just keep getting softer. Like its actually insane. With the Vishnu's, they are soft on both the tip and tail. The Blends are stiff at the tail. Near the end of the season, the Vishnu's were still getting softer.
One VITAL difference that I noticed is that the blends are like fucking noodles. They don't snap back and its actually kind of hard to do things on them that you would think would be easy. Plus they're wider and pretty fucking heavy. The Vishnu's are like rubber bands. They resist you a bit as you flex them which is perfect and they snap back when you want them too. Only problem I had with my vishnu's was they delammed after 5 days of skiing at breck with no park. Seems I am the only one with the problem though. I rivetted them at all 4 ends 3 times and epoxied them every other week but the delam kept getting worse.
Honestly though the point is, don't judge a ski just by handflex. The Blends lack any snap and resistance when buttering.