I own the Arya Stealths and am very happy with them to the point I have no real itch to switch and think you’d be very happy with them as they do a whole lot right if you’re looking for a truly neutral presentation. However, if I was buying now I’d go with the Organics because they seem to be closer in performance to the HE1000SE for not all that much $$$. That said, and this is a big consideration, the Organics have more treble detail than the Stealths that may or may not be too much for you, so I’d buy from Amazon so you have an easy return option just in case, and if so you may be better off with the Stealths. If you haven’t seen it this review does a nice comparison between the Stealths and Organics, and he even uses your Topping amp/DAC at one point and found it to be a pretty good combo with the Organics, so that’s a good sign. Anyway, just my $0.02 and hope it’s somewhat helpful. Best of luck.
https://soundnews.net/reviews/headphones/hifiman-arya-organic-review-comparison/