The stock Topre experience on a Realforce RGB is decent, but you'll probably want to do upgrades. The advantage is MX keycap compatibility, so lots of options there. For the money you'll put into though, it's doubtful it's worth it for some. Personally, I love my modified Topre. I don't plan on using any MX style switches again (except maybe something more exotic like Clickiez).
I put BKE ultra-light domes in mine. It gives the Topre and fantastic tactile feel with a crisp, light snap. You will lose the more gradual actuation that's possible with the stock domes though. For me, it wasn't an issue but if you're a touch typist you may want to stay closer to stock style domes.
I use my Topre at work and a Model F at home. Both are 104 layouts which I need. Unfortunately, I don't think there are any 104 RGB layouts anymore from Realforce.