You are not crazy at all. I have used TI flats on a couple of my basses on and off over the last couple of years. Most of the time, I love the sound and feel, but occasionally my ear longs for something else. I keep trying other strings, but keep coming back to the TI flats on my main fretless. I keep my backup fretless strung with rounds for those times my ears don't love the sound of the flats. Keep trying strings until you find what you are looking for.