I have a PSA that's really accurate and a Bear Creek that's my backup plinker.
The PSA was $000 ish and the bear creek was $225 ish.
Both fit standard AR lowers, both feed 100% from Black Dog magazines.
The unique close-but-not-really lower of the 15-22 is a put off for me.
All of my AR15 lowers have multiple uppers, having a unique single use lower seems strange to me.