I had the La Bella White Nylon Tapes on my basses for a few months, but I ended up taking them off in favor of D'Addario roundwounds.
These strings are very expensive! Each 4 string set cost me $52 (after taxes). The build quality is top notch as expected from La Bella. Plus, these tapes are some of the smoothest feeling strings I have ever played! They're exactly the opposite of Rotosound 66 Swing Bass stainless steels, which feel like cheese graters on your fingers.
However, the tone was not bright or clanky enough for me. My favorite tone from these strings featured my distortion pedal. But they were closer to flatwounds than roundwounds tonally without any effects. These strings would be fantastic for a fretless bass, but not for anyone who wants clank, brightness, or aggression. In essence, they are not as versatile as they seem.
One area to note is the string tension. Despite the string gauges being 50-105 like a typical medium gauge set, they are actually insanely light gauge. Under the nylon wrapping is a set of 35-90 rounds that are equivalent to the Rotosound Funkmasters that Cliff Burton (RIP) used. So these strings are not suitable for any tuning lower than standard. I tried recording music with them in D Standard tuning, but my isolated bass track was way out of tune! That was the last straw for me before deciding to change them.
The La Bella White Tapes are great strings for the right applications and styles of music. But they are certainly not for everyone.