Just thought I'd share my experiences from trying to figure out my keyboard preferences over the years.
Instead of testing switches individually by pressing on them one by one, to really get a feel for a switch type, you should try to find a full keyboard with those switches.
When you use a keyboard normally, you are going to be using both hands to sequentially press a lot keys with different fingers (of varying strengths), in a short amount of time, so if you were to try out switches in a switch tester, you will not be able to get an accurate feel of how the keyboard would be under normal usage.
For example, you might have an index finger that is very strong, and have no problem pressing an individual MX Green switch, so you decide you like it and go to your local PC shop, buy a QFR in MX Greens, and within two hours of using the keyboard, your pinky starts to hurt, since it is a lot weaker than your index finger.
I've always believed in the idea of testing and trying out something the same exact way as you would use it normally. Just like how you wouldn't test drive a car by driving it 30 km/h in the parking lot, you're going to want to push it a little, and see how it performs under different circumstances!
If you are unable to try out a complete keyboard in your switch of interest, then at the very least, I'd highly recommend that you try to get two of them. With two switches, at the very least, you would be able to use your index and middle fingers to alternate and press down on them, which would give you an idea of how it would feel if you were pressing them fast.
It's a simple concept, but I thought I'd share anyway in hopes that it may help someone, since this was how I was really able to determine my two favourite switches out of all the ones I've tried.

I wish everyone the best of luck, and happy keyboarding!