It's a strong solid assym. The paragon core is very user friendly, I've seen bowlers of all styles throwing the defiant line. Lower rev or speed guys around me use the Soul(hybrid) and guys with higher ball speed and/or rev rate using the Defiant. It's strong, yet controllable off the dry. Guy used one tonight in league and threw it the first 2 games before balling down to a Disturbed.

however I do well with the edge.

this for me as well...awesome ball overall and for the discount they are going for on some sites now you can't beat it

I have the edge and for me, that ball goes long and snaps. I threw a friend's Totally defiant, and it came off the corner even harder than the edge did. Depending on what you are looking for (length and snap = totally defiant/edge) or (length and smooth back end = defiant soul), I really dont think you can go wrong with the new ones. Good Luck!

The Defiant is a really good piece from Roto. The biggest thing with that core is drill it weaker for THS(i.e. Big angles and shorter pin to PAP). I agree as above, Defiant for oil, Defiant Soul is more THS friendly.

The strongest ball I have right now for oil is the Berserk and that's 4k with polish. I was thinking of getting a Disturbed but was offered a Defiant for what I think is cheap. About $30 less than the Disturbed.

The Defiant is very strong.  I bought one when it first came out to replace my VG Nano and left it at OOB due to having a higher average ball speed.    The Defiant in my case was a few boards stronger than the Nano, and that was already very strong as it was.  But compared to the Nano, the Defiant has a smooth, continuous arc reaction and it's very driller friendly.  On top of that, the carry is really good and it suits virtually everyone well from strokers and tweeners to your crankers and 2-handed bowlers. 

With the positives said,  it's primarily a tournament or sport shot type of ball for me.  Only twice this season have I had to pull it out for THS when it was very over/under.  Both times, the Defiant only lasted about 1 to 1-1/2 games.  However, I was able to score and carry very well in those situations.

My suggestion is that if you plan to use it on THS and have average speed, you may need to take the cover to 4000 and add polish.  The good thing is that the ball takes cover changes well and it can be versatile.