I've tried nearly every kind of mechanical key switch (browns, blues, purples, clears, whites, yellows, silvers, "Romer G"), and these silent reds are easily my favourite of all of them, at least for typing experience. I don't know if they're factory lubricated, but they *feel* lubricated, its a pleasantly smooth and consistent resistance, with a very satisfying thunk as they bottom out, and then a speedy reset. The frame of the keyboard is also sturdily designed and well padded, which helps with having clean tactile feedback. I also have a glorious gaming keyboard which similarly has modular switches (the same type), but this might be a better implementation, the switches seemed easier to remove.
I also really like the 65% form factor rather than the more common 60%, particularly for preserving the dedicated arrow keys, which I use all the time to navigate around text when I'm typing. The three other dedicated keys, PgUp, PgDn and Del, are also perfect choices, as those are the three keys I use the most from that cluster of a full size. I do wish Del was on the bottom rather than the top of the column, to correspond to where you'd feel the key on a full-size, but I can get used to it.