Just wanted to post a quick review of these. I've only ever tried tapewounds once before - they came on a used fretless bass I bought, and I quite liked them, but since I couldn't identify them, and also since I decided to sell the bass, I never bought any more.
So .... having bought a couple of fretless basses recently, I decided to give tapes another go. Asked a few questions, read a lot of reviews, and decided that Fender would be the way to go - partly for price, partly for their relatively low gauge (58-72-92-110).
All I can say is that this is the best choice I could've possibly made for the bass. I usually use light gauge roundwounds (40-100, DR HiBeams), so I'm used to low tension and a lot of brightness, and the Fenders certainly haven't disappointed me. They're full sounding, with nice clarity, and enough top end sparkle to keep me happy. The feel, though, is what's blown me away. Super fast, very low tension, easy to bend - they're just like playing roundwounds, only I'm not ripping my fingers apart!!
I was slightly hesitant to go with the Fenders, as the LaBellas seem to be the strings that most people prefer, but partly due to their cost in Europe, and also due to their heavier gauge, I decided to give the Fenders a chance, and will now stick with them. The model of the Fenders is 9120.
Anyway - hope this helps anyone considering trying tapewounds out.