Trying out on a test board is really hard to tell. 
For instance, when i got my topre board the other day i was like : ffs, this is mushy, **** rubber domes. But now im like, damn, this is really better than i thought ! 
But blacks might be heavy for you. I know I like to feel, and go without too much effort. Havent tried out blacks yet, but reds/browns and 45g topres are just perfect for me 

Edit : sorry kinda intoxicated here, good belgian beer got me. What i want to say is that you really need to try out the board before making a decision. Trying it out, as in typing during quite an extended period of time. 
For instance, I find my topre board too light on the space. I press it without realizing i am pressing it. 
I find blues a bit too heavy for me, so browns or reds seemed better but without the tactile feedback.