Having played for years on old tracker pipe organs, I much prefer a firm keyboard touch. The keyboards on those organs, especially when the manuals are coupled, are so firm that you practically need a running head start and a leap to depress the keys. That was a little too much of a good thing. But in general, I've found that a firm keyboard allows for more precision. Equally important is the point in the key depression at which the note is actually triggered. This is equally true with bass pedal boards. If the trigger point is too close to the surface so that the slightest depression triggers the note, then it's difficult to control the attack because the note sounds sooner than you want or expect. This shows especially in classical and Baroque music, or any type in which the attack of simultaneous notes is audible. For example, when depressing a chord. In a high-quality keyboard, each note of the chord can be easily trigger simultaneously so that the attack is crisp. With a poor musician or a poor keyboard, the chord strikes consist of a series of sloppily triggered notes that create a smeared effect. I hear this all the time with Hammond players, or when a pianist is playing an organ, but I have the same difficulty with the PEK and P'08 when I'm playing organ music. Sad to say, these instruments don't have especially high quality keyboards, but I do think the P'08 has the better.
This sort of problem does not show up when you're playing fast. You have to play somewhat slowly to notice it, especially from chord to chord in a legato style, as hymns are to be played. And the envelope has to be organ-like: immediate Attack and Release with full Sustain. That's how I test a keyboard.
Here are some examples of smeared chord strikes. Listen carefully to the first six chords on the string synthesizer, especially the second and last ones. The fourth chord strike is the cleanest, but the others are quite sloppy. It might be due to Banks' somewhat careless playing, but it can also be due to a cheap keyboard that doesn't precisely trigger. In either case, a good organ teacher would have your liver for it!