I'm not sure how to take the comments here. For under ~$60k MSRP completely loaded, the ST seems like a decent deal to me. I ordered one (due later this month) after comparing the ST to pretty much EVERYTHING remotely similar. The X5M, SQ7, Cayenne Turbo all outperform the ST and are a LOT nicer to drive, but with $100-160k+ price tags (once you add any options). Middle of the road versions of these luxury vehicles (X5, Q7, Cayenne, GLE450 or AMG 43) all run $75k+ and don't outperform the ST. The only luxury car close to the ST's price/performance is perhaps the 375hp Genesis GV80, which will still likely run $10k more. The ST is also less expensive than the mainstream brand monster Mopar vehicles ... Durango Hellcat (which you can't get anyway), Track Hawk or even the SRT versions of those two SUVs (which yes, all outperform the ST, but also all cost more and frankly are on the brutal side, very thirsty, and offer no more in terms of build quality).
Less expensive mainstream 3rd row SUVs are certainly out there ... the Highlander, Telluride/Palisade, Ascent, Traverse, or Explorer XLT run typically $10k+ less in well appointed configurations and, in all cases feel like they have similar or superior build quality. But, they are also uninspired to drive and at best lag the ST's power by 100hp.
So IMHO, and after test driving almost all of the above, you get what you pay for. If you're not happy with your ST, qualify your comments with what you might have done differently and why perhaps? I can say, the ST doesn't handle or perform anything like my Porsche 911, but I feel that's like comparing apples to oranges ... a 3rd row SUV is not a pickup truck for example.