There is not a single disc in my bag that inspires as much confidence in me as my Opto Compass(177g) does. Of the few mids that I've tried, this one fits so comfortably in my hand. I use both fan grip as well as a modified powergrip and I'm confident I get my best, most consistent throws with this grip. At this point it might be my most used disc in my bag behind my leopard3. For me, it goes mostly straight before having a short smooth fade. As I've broken it in, playing every day now for a few weeks straight, it's still stable and super reliable for me. 

Feel
This is my first disc in opto plastic and it will certainly not be my last. Instantly, I loved this plastic more than any other I had tried. It's seriously grippy, almost tacky. However, it's still plenty firm enough that I feel confident in getting a clean release. To add to that, it's durable too. I've hit trees, cement, road with this thing and it still feels great and hasn't lost that much stability for me yet.