I've used a few of the products included in this set and followed the decal tutorial on Vallejo's website
decals (scroll down). These 2 products I found to work quite well with the Decal Fix allowing easy positioning and better adhesion. The 'softener' isn't as harse as Solvaset in the wrinkle department, yet 1-2 applications does the job in making the decal conform around details.
The washes, being acrylic, aren't grainy....but....I've had no luck with them as of yet. Some acrylic washes I've used allowed me to remove excess and blend in after they were dry. These, at least the way I've been using them, once dry (which is a matter of minutes) stay right where they are.
Using acrylics can have a learning curve, one I'm very willing to spend some time on. The good news is this
DVD is out (or being released very soon) with Mig showing how to finish using only Vallejo acrylic products. Hopefully many of the questions of using some of these products will be answered there.