Everything mentioned is very close to my experience with Cherry Browns vs Torpe.
Typing this post on a Ducky Realforce 45 gram, being a long time Cherry Brown fan. I don't have experience on all switches and boards but have owned HHKB Type-S, Realforce 87U variable, a few other Cherry switches. Since I like the Cherry Brown feel, I find that the 45 gram Realforce silenced feels slightly harder to press than a stock Cherry Brown keyboard. I picked up a Ducky Shine 5 a week before receiving the Realforce, so it's pretty much back to back, both new keyboards. But honestly the feel is totally different in a good way. It's hard to say what is exactly like the Cherry Brown since you can only replicate that with a Cherry Brown style switch.
But if you're like me, wanting something for the office, that offers the nice mellow feedback of the Cherry Brown, is much more silent, and enjoyable to type on, I would suggest the 45 gram (or even the 30 gram if you could deal with some softer feel). I personally like this for the office and home if you don't want to bother people next door, even as I'm typing, the feedback is very soft and sounds like I'm finger tapping a mouse pad on my desk. At work we have an open office environment, which some love and some hate, but during my typing I would realize people a row over from my desk could hear my keyboard. Not that I got any complaints, but I don't want to be that guy in the office. So I tried different Cherry boards, Clears, Browns with o-rings (which felt awful as mentioned above), finally Clears with thick PBT caps. The Clears with thick PBT caps worked the best, but I ended up keeping that board for home and order the Realforce for work.
The biggest trade off IMHO is I do miss the "snap" of Cherry Browns, the Realforce and I think 45/30/variables all have this slight sluggish feel on the up stroke of the key. I can't say the 55 grams have this problem, but if I was in a typing contest, I would look for something faster. Granted I'm a slow at typing so this is a moot point.
If you have any questions, please feel free to PM.