Yeah, it's really hard to tell on others vehicles. I'm borrowing some from Nismomike this week so I can test the Avid springs too. I was told not to bother with the Losi springs since the Avids are better.
I was going to try Losi greens in the front and yellow in the rear which is close to the AE springs I'm running now. In stead I'm trying the Avid yellow up front and Red in the rear. My truck is dialed right now, so I think I can get a good feel just how much better they are for me.