My gaff seems like it is about to tear on half. The handling is also very finicky. It just seems like something that was thrown together. Both in idea and construction. I am pretty sure that I am done buying Sans Minds products after being burned so many times.

I'm not sure if I'll perform this effect because the gimmick just seems like it's going to rip. It's really visual and fooled me when I did it in front of a mirror. I just don't feel confident doing this effect without me thinking that I'm going to tear it.

There really are lots of things to complain about this product, but I'll summarize it all:
gimmick is fragile as you are scared it's about to tear in half, you can clearly spot the gimmick in close-up scenarios and its handling is pretty bad as well.
For a trailer hyping this gimmick so much, I couldn't regret purchasing it more.

First off, thanks to the good folks of Penguin for the request. And as a magician who owns just about every good trick on this site (around 20k in tricks) and who is a occasional paid magician soon to be a upgraded paid part time pro magician . I can say that I'm qualified to have an opinion that's worthy.
Sansminds has made some good tricks. They have brong me joy. Distance is a great trick. On/off is good, Touched is good, Pasteboard is good, compresse, caps witch just to name a few are nice tricks. And produced well.
Now let's get to Contrast. It's a train wreck. I really don't understand how someone could say that this is a good trick. It's so loud it sounds like you just let off two shots out of a cap gun. The angle is practically front on 25° because the dbl has a big gap between cards. That's because he says to bend it inward a bit, that makes the big gap, duh. And speaking of what he says/taught. He teaches good but I don't remember him going over what can go wrong. And it will go wrong.
I can't do the trick. I'm 0 for like 50 tries because Aa bad double herky jercky move double knacky move that ends with the gimmick only doing one move and a half a color change, or both moves two slow with a double loud sound or the double move done rite but the gimmick flies out your hand or how about the tape sticking to their card instead of the gimmick which all possible outcomes would be a performance show is over disaster. Oh, it's extremely akward to hold for the move. Thats from someone who does a little xm. And to top things all off. It might rip at any moment from handling it and mines doesn't even work smoothly at all. It barely goes with the gravity. And believe it or not, I got more complaints. Worst gimmick ever that I can think of rite now.

This trick creates great reactions, however the gimmick could be better... It is thin and probably won't last. Sorry guys, but if you're creating a great trick like this, you should have used better materials...

The gimmick is really flimsy(feels like it's gonna rip). I'm afraid to perform this because of the gimmick; I wish it was more sturdy. If it does break, you could probably make another one if you know how to split cards and make it change to the deck of your choice. I don't think I'd perform this anytime soon.

The idea behind this effect is nice, but the gimmick that comes with the DVD leaves a lot to be desired... Great effect for making a YouTube clip, but as a worker in the real world, for real people...

The main reason I gave it 2 stars is because the quality of the gaff and that the handling (move) is quite difficult to execute properly, making the change look "impossible". I think there are better (and more visual) color changes out there already.

The color change is extremely realistic! It can easily be performed surrounded.

I must admit it is one of the greatest tricks I've seen.

Does just what it looks like in the video - crazy awesome gaff - killer twist on the classic T&R. Not hard to learn or perform. Take care of the gaff and it will last you a long time.