Ugh... This thread makes me want to buy something I can't afford 
I just a lot of my MX stuff so that I could buy a second RF.  A lot of the MX stuff I had just recently purchased too.  After ordering my first RF about a week ago I decided that although MX is good topre is just better
(rubber dome, scissor switch) <<< MX switches < topre
I think 55g is the perfect switch, and this is from someone who thinks blacks are too stiff.  The board I sold all my MX stuff for is going to be silent RF, just to satisfy my curiosity.  
Long story short, you can just sell all your old stuff like I did.  I think it's worth it.