That's a good point.
I'm not really into collecting different keyboards though. When it comes to Cherry MX, I'm a blue guy and that's about it. So chances are, I'll get one blue Cherry MX keyboard and that would be it for me--I won't be looking at other Cherry MX keyboards any more.
I plan on getting one keyboard of each major switch type. I already have one buckling spring, so I still need be one blue Cherry MX, one Matias, and I have two Topres on the way, although the 2nd one is only because I love the form-factor (66% Leopold FC600C) for traveling and typing in bed (hooked up to my Galaxy Note 3).