The only thing that could make the 87U better is a metal case and blank white keycaps
That was the deciding thing being stuck with next to NO available keycaps. But if you're willing to spend huge amounts buying it off members here on Geekhack it may suit keeping the Realforce.
But I gave up on it long ago, due to Cherry being such a prime vehicle for massive customization with almost any shape of keyboard/key-caps imaginable.
Yeah, that does kind of suck. I like topre, at least for work, because silenced topre is nice and quiet (and I've never been a fan of o-rings etc. on cherry).
Supposedly topre/realforce/leopold/whoever actually makes these things is opening a new factory (in the next month?) and there might be ability to get new orders of keycaps made at some point in the future. I've only heard this kind of second-or-third-hand though (the original source was the EK guy I think), so who actually knows.
That being said, I'm definitely willing to spend "huge amounts" buying them from a GH member, for some definition of "huge"