Flat out, I will never buy another item from QNAP. Ever. Their “support” is a joke, and their only fix for hardware that doesn’t work on “supported” OS due to old firmware is to return it and hope to get a new one with a new firmware that actually works. Like, WTF? And “supported” here means they have some old, janky, partially functional Linux app that ran on an Ubuntu desktop once upon a time. No headless system support for a server attached product. And really, they want you running it on a Windows desktop.
Beyond that, the physical hardware itself was super generic gear. I was unimpressed with paying a premium after friends all recommended QNAP, and I got what was basically a child’s toy that they didn’t expect a professional to be using.
As for multi-gig router, if you’re doing dynamic, addressing and masquerading then I can recommend the unified dream machine pro. The second edition is more capable, and has a faster backplane between the 10 gig land and land ports and the one gig ports. The original dream machine pro that I have does not have that feature, and it’s sorely missed.
If you need to do any complex routing, or static addressing then things get a little more wonky. Wonky. Very obviously does not expect this device to be a real router, but rather than that and masquerade gateway for a small business office. It totally works, and I’ve had mine for a few years now, but it’s just something to be aware of.
Mikrotik also makes a 10g router device, as do a couple other companies. They’ll expect you to be a bit more experienced, though. I’m not sure what your skill level is, but they are options at least.
Edit: you want an sfp+, btw. An sfp only does 1gbit, an sfp+ does 10gbit, and qsfp does 25+ gbit. https://www.black-box.eu/en-int/page/45646/Resources/technical/Black-Box-Explains/lan/SFP-vs-QSFP-What-s-the-difference
LLM are parlour tricks that impress the gullible and easily confused. LLM aren’t building blocks for anything but energy consumption and greed. “The singularity” isn’t coming, true intelligence isn’t coming. You’ve been lied to, and this is the fourth time in my career alone that this has had to be said.