I just purchased a 172g Champion Groove last week and here is what I noticed:
This disc is perfect for hyzer flips or anhyzer flex shots. The key is speed. It's a speed 13 disc, so average players won't be able to throw it well (and might not even know what a hyzer flip is). If you're intermediate, you'll likely hate this disc and find it squirrely because even I noticed that when my speed is a little low and/or I fail to hit it, it can be unpredictable. When it's thrown with proper form, it glides a long way and has a very nice S to it when released flat. The S gets exaggerated when you have an anhyzer release and you must be careful not to put too much anhyzer or it'll turn and burn (but this is true of many discs). The glide is so high that it really shines in hyzer flip scenarios. It even gets some skip on the end. For weaker-armed throwers, avoid this disc, it will likely find the trash bin or get lost after you repeatedly spray it everywhere and make ridiculous adjustments to try and get it to fly right. From what I've seen in lower weights, this disc can be very troublesome for any type of thrower, so picking up one in the 170s is a good decision. No matter what you do, work with this disc in the field for several shots before you bring it on the course. It requires some getting used to because of its wide rim particularly for those with smaller hands.
Also, as a note, I wouldn't recommend using this on really tight shots because it does need some room to work like most fast maximum distance drivers. For that I'd say go buy a Tee-Bird.