Uhh, I switched to IONs and really love them. My putting improves and my favorite is a white light one, late model. I've used them for several months, like them, took my Aviar OUT of the bag...
On a whim, I gave my Aviar a bath, circled it in my hands and shoved it in there a couple of weeks ago. I'm choosing it more, and more on longer putts.
And digging it.
IONs are cool but they have not stood the test of time. I'm digging my Aviar again lots.
The rubber edge has no advantage far as I can tell, the GYRO tech chip may not be working, can't tell, it just has a flight characteristic as other discs do.
I carry one but am using it less and less and my putting percentage is staying the same.
I purchased all my MVP discs, the Vectors didn't make it, the ION may be lost due to lack of use.
I don't "bad mouth" discs, I like the ION but it is not what I thought it was, it is not a magic disc, it is a choice and not a bad choice.
I gave one each to my golf buddies, they don't do disc Internet or marketing from anywhere...
Their putting is not getting any better, skewed because I gifted the discs to them.
I wish MVP all the best but I am enjoying my Aviar again and my ION less and not missing it.