I used to be a big keyboard enthusiast until I did a bunch of typing tests with many inexpensive keyboards. To my surprise, the data showed a statistically significant increase in my typing speed on several budget membrane keyboards.This disturbed me enough to fully convert back to membrane after all of these years.

For an idea of the scale, I typed about 140WPM on the HHKB and about 150WPM on the budget membranes.