K70 RGB TKL CHAMPION SERIES Optical-Mechanical Gaming Keyboard with PBT DOUBLE SHOT PRO Keycaps

You've put a lot of thought into this. I wish everyone was as diligent. The main risk with HE switches is that they might not be around for the long-term. Although Hall Effect keyboard have been produced for decades, that was a very niche technology. Since the popularity of the Wooting has brought HE into the mainstream, there is sudden broad support for it. But there is also a competing magnetic technology in TMR (Tunnel Magento Resistance). There is no way of knowing whether either technology will stick around for the long-term. HE detects voltage changes induced by a magnetic field, whereas TMR detects changes in resistance. Both work in very similar ways, though HE draws more power (still negligible in overall terms though). The magnetic fields in both technologies are extremely small. They don't cause interference with anything. They have to be small, because you wouldn't want one key interfering with another. The most that I have seen is slight interference with a device that was placed on the keyboard wrist rest. I wouldn't place the keyboard near a strong magnetic source, but other than that very unlikely scenario, there is no concern about the magnetic fields involved. PBT does not contain phthalates. It's short-chain ortho-phthalates that are problematic, because they are absorbable. Long-chain tere-phthalates are not problematic. PBT is a polyester, very similar to PET (polyethylene terephthalate) used in food packaging. But as you don't like the feel of PBT, that's not a concern anyway. The main concern with ABS is that it tends to become 'shiny' more readily than PBT. Skin oils and repeated use tends to make the surface wear to a shine. There's no concern about ABS wearing out over time - just the shine. The wrist rests that come included with some keyboards tend to be middling at best. About the only advantage they can offer over a third party one is that some of them attach to the keyboard. Otherwise, you're always better getting your own separately. The primary reason to use a magnetic or optical keyboard for gaming is latency. All mechanical keyboards suffer from contact bounce. Indeed, all mechanical switches, regardless of use, do. When two metal surface initially touch, there is a very short period during which they bounce - they bound and rebound against each other. Accordingly, all mechanical keyboards have a debounce time (typically around 5-8 milliseconds) where they ignore the input of the switch, until the contact bounce ends. Setting the debounce time too low results in chatter. Because magnetic and optical switches have no contacts, they have no contact bounce or debounce time. So they are, in theory, quicker to respond. One thing that is rarely mentioned when talking about magnetic keyboards is that they are inherently hot-swap. This means the switches are not soldered to the circuitboard, so you can replace them without tools. Many mechanical keyboards are also hotswap, though they require adaptors to make that possible. The concern about magnetic hotswap is that some keyboards are factory-calibrated so you can't easily replace switches yourself. Also, there is no agreed standard for magnetic switches, so those from one manufacturer aren't likely to be compatible with those from another. Grrr. SteeelSeries uses OmniPoint switches, which are rebranded Gaterons, so replacements are relatively easy to find. Corsair uses MGX Hyperdrive switches (save us from these names), which you cannot buy separately - Corsair says they will make switches available for sale, but it's been a while. A large concern with magnetic keyboards is software. In most keyboards, any software is largely irrelevant unless you want to play with lighting patterns. But because the actuation point is adjusted through software, you need software to control that. And that, I would say, is a reason to choose a big brand, rather than a Chinese keyboard. Keyboard software is often a minimally-viable-product, poorly programmed and buggy. It also tends to be infrequently, if ever, updated. With the software being so important to magnetic keyboards, you do want some assurance that the software will endure. As the manufacturer with the longest experience of HE keyboards, Wooting undoubtedly has the best software. But their 80HE isn't a true TKL layout, lacking some keys and employing a 'compact' layout that changes the position of some of the keys. I would generally recommend the Wooting if you can get used to the layout. You're looking at the Corsair K70 Pro TKL and the SteelSeries Apex Pro TKL. Both are basically fine. It's hard to recommend one over the other as they're so very similar. As I'm sure you've read, some of the switches on the K70 aren't actually HE switches at all - they're normal mechanical switches. If you would like all the switches to be HE, get the SteelSeries. If you want the extra knobs that the Corsair has, get that.