I like DGA pretty good.
My opinions; keep in mind I'm at 5200' elevation:
I like the D-Line plastic WAY more than Pro D. Very grippy, not waxy. Feels like the back of a Kindle.
The D-Line Reef is my circle putter.
Pro-Line Breaker is a great upshot disc because I can throw it at 80% power and it only goes 250ft, I throw it with 100% power and it goes 260ft, easy to range. Must be the blunt nose.
Pro-Line Titanic, meh. It doesn't feel good in my hand and I get bad releases.
Pro-Line current run Aftershock, Pro-Line First Flight Aftershock, and D-Line Aftershock are my go to mids. Listed from most to least stable (You know what I mean).
My Pro-Line Squall is not at all flippy and cuts through head winds better than the Aftershocks.
D-Line Tsunami flies super straight with a dependable end fade.
Pro-Line Tsunami is a meat hook.
Pro-Line Undertow (lost and not replaced) sucks. Nose angle sensitive I guess.
Pro-Line and SP Rogue, meh. I have to throw them so hard to get them to fly well. I'm shopping for a D-Line Rogue for some turn and glide.
Pro-Line Hurricane same as Rogue. Just not special.
SP Hurricane, very beefy.
If I was forced to use only DGA mid-ranges I'd be fine with that. Everyone who doesn't try a current run D-line Aftershock is missing out.
I'd say the only things that are missing in the line-up, out of the box, are a flippy 12 speed driver and more traditional fairway driver.