The Stinger ATK is lousy, not up to PSE standards in my opinion, and I don't think it's an improvement over the prior versions. It's a "modernized" version of a bow that should have been retired a decade ago. They need to do a full redesign and stop cutting corners. Even Diamond came out with a whole new design for the Edge series and they've been milking that platform for ages.
Honestly, the bow I'd suggest is the Bear Legit. $420 plus a release if you don't have one, plus arrows if what you have isn't suitable.
As far as entry level compounds for someone who's been shooting, they're quite nice.
If you want single cam, the Species is also nice, just make sure you get the 70# not a 60.
Going up a notch, the Bear Resurgence/Alaskan is much quieter and has a more dead post shot feel, much more like a high end bow.
The Blackout Epic X2, not the original Epic, is also very solid, but like the Resurgence it's more of a $550-600 bow rather than $420. The biggest improvement over the Legit is a bit more speed and less noise. I've shot them all quite a bit and personally shoot the Epic X2 the best but would usually suggest the Resurgence to someone in your position. The adjustable limb stops make for some really fine adjustment possibilities and it's a really quiet bow. The Epic X2 has a bit more of a pop to it, but is better than the Legit and also has adjustable let off which has the effect of letting you fine tune draw length if you want. You get what you pay for in all of them, it's just a question of how much the improvements are worth to you.