The only thing really holding me back on the 1-10 is red dot performance at 1x with the reticle in the 1-10, which I don't think is as good as the near-RDS capability of the 1-6 (just from playing around with the gen III in the shop).
You are correct, it's not as bright due to the design. I only have one ATACR, and it went into NF for servicing early on for it's dot. Apparently the first batch way back when had a dying dot problem and mine was serviced under warranty. Supposedly it's fixed now, but I'm wondering if it quickly developed a problem again. It's just not as bright on setting 10 as the Razor. Not the end of the world, as it's still bright enough, however it also is less forgiving if you're off axis from the center, so it "fades" to being less bright slightly faster than the Razor 1-10. The 1-10 does this as well (as you've seen), it's just not as pronounced as quickly, at least compared to my sample of one ATACR. And mind you, we're talking a difference of a millimeter here. It's kind of like complaining if a hot girl has long hair or short hair.

All that said, the Razor is still very bright in the bright Florida sun.

I'm still trying to decide if I can get over the ATACR's rotating ocular. At a minimum, it's annoying as hell, especially if you're trying to use flip up caps. At even with Mil pricing on the NF, it's really hard to justify the cost premium over the Razors.
The included scope caps mostly make up for that, since the ocular cap is free-wheeling. I still have to bump the cap a click or two to a better place if I'm planning to go from 1x to 8x quickly (like at a competition). But usually it will eventually hit the right side of the receiver and then just start spinning so it doesn't prevent you from adjusting the actual mag.

As for cost, honestly, that's why I got another Razor. Well, that, and I got a smoking deal on this last one that was even under all of the .mil pricing by $100-ish. I do kind of feel like the ATACR is the better scope, but that may just be due to round count and exposure. The Razor definitely has some niceties, maybe even more so since my ATACR reticle is the original one.

That is totally something I would do - I feel for you. Happy with the mount, I presume?
Yes! I sent you a message, but not sure if it went through. As usual, I forgot to take a picture while at the range zeroing, so here it is in its domestic setting. I think the purple in the Razor brings out the doodoo brown of the NF mount. (And before I get publicly admonished, the Aadland caps are on order)