I appreciate the responses.
Space is not a concern for me at all. I built a custom-made shelf for the keyboard and mouse:
Cost is also not an issue. It's my primary business tool besides my smartphone.
I'll be staying with a full-sized keyboard, with the only caveat being that if I go with a RealForce 87U I'll be adding the separate numpad, which is fine (it will be literally glued down to the desk, as is the keyboard).
I’m pretty sure I'm still just trying to choose between a RealForce variable full-sized 104 and a 45g-uniform (which only comes tenkeyless) with a separate numpad added (which, by the way, is 45g-uniform).
I'm also a bit motivated by the keycaps on the RealForce. I understand they're top grade. I currently have a Leopold 104 with Cherry Browns and also a Cherry Browns 104 from WASD and the lettering on the keys on the latter has worn off twice. (I'll be going with a white RealForce. I always preferred black keyboards but I'm well aware that a black RealForce is virtually unreadable in moderate lighting if one is tired, and I do still rely on looking at the lettering often enough for it to matter to me.)
As to the 55g, as I mentioned, I find the Cherry Browns to be just a tiny smidgeon on the firm side of my sweet spot. I'm under the impression that RealForce 45g is as close to that as I’ll get in a RealForce.
I know the RealForce variable is 45g on all keys except the pinky keys are 35g and the Escape is 55g.
As to sound, I like the sound level of the Browns and, if anything, could probably handle something a tad quieter.
By the way, my Cherry Browns have o-rings added, which reduces travel and sound and provides a softer landing. I find the Browns with the o-rings added to be a far superior typing experience than without them.
I'm wondering what's meant by saying the 45g or variable feels "mushy". I assume that means not enough weighting, correct? And, again, this is my area of inquiry and where I'm feeling my way, with the Browns being my only meaningful point of reference in terms of my personal experience (and the UniComp buckling springs being way too firm for me).
Thanks again!