I know saying this could stir up tensions. So, don't get me wrong, any Topre is worlds beyond any old rubber dome in accuracy and clean feel.
I remember using a Dell SK-3205 for a little while at my last job before I brought in my own board with MX's. It bottomed out too easy and was a heaver actuation feel than the 45g Topre as far as I can remember.
Were any other ones closer in feel? It's not going to be a board I use mainly as it's going to stay hooked up to a computer I only use a couple times a week max. I need to get another one and I'm not going to use any of the OEM HP boards I have collected up here, so I'm hoping any Topre fans here might be able to shed some knowledge on the closest to Topre feeling rubber dome boards.