I was just reading a review of the Logitech G710+ mechanical gaming keyboard. I was given this as a gift some time ago by my son when he bought for himself a still more expensive keyboard. In general I’m quite happy with the keyboard, though I can’t say that the typing experience is amazingly better than my other keyboards. I think I might agree with one reviewer who said the keys are just a shade too close together. Perhaps keyboards should be tailor made for the user, based on expert evaluation.
I also have a cheap Rapoo bluetooth keyboard, for example, which I bought once in India for usage with an Android tablet, but which can be used for any of my devices. In some ways this keyboard feels a little bit easier to use, despite its small size. The only trouble with bluetooth is that it is not 100% dependable. I keep the Rapoo next to the Logitech. For night use, when my spouse is sleeping, the Rapoo is a bit quieter than the Logitech, though then there is the disadvantage that the keys are not lit.
The keys, are if anything, a little more generously sized on the Rapoo, though the keyboard itself is so much smaller. There is no number pad on the Rapoo. Since I never use those number keys, it is an advantage for me that the number pad is absent: the wrist is closer to the mouse or trackball.
By and large, I think my typing experience on the Rapoo is better than that of the Logitech. An irony, since the Rapoo is so much smaller and cheaper.
Fortunately, on account of my desk setup, I can shove the G710+ to the back whenever I feel like using the Rapoo. And whenever the Rapoo decides it isn’t going to work, or I feel like I would like to use the G710+, it’s available as usual.
Recently I bought a Logitech M570 trackball, even though I have a good Logitech mouse. I've actually always liked trackballs, just as I've always hated trackpads. With a trackball, the hand does not need to travel around the desk, which I think is easier, and the actual surface under the pointing device is unimportant. Our glass topped coffee tables, for example, are fine. There's also an advantage if one is using a laptop on a portable knee tray, for example, or an airline's tray, in that less room is necessary. The only thing is that it is more important that a trackball be well designed and engineered than for a mouse. Logitech's M570 fills that bill, and has been tested by many users. My history with trackpads is that these too must be well-engineered, and I have never been able to afford the high end laptops such as Apple products, that presumably are equipped with better trackpads. I possess a Logitech keyboard - trackpad combo which is the most horrible device that I ever purchased from Logitech. I use it for our media pc, but even for that comparatively light use, it is ill-suited.