(I am not trying to horn in on the "Flats on Frets" thread.) So I got this new Lightwave fretless bass -- before fhodshon offered his for sale, I'm sorry to say -- and it came with Boomer roundwound strings on it. I was all haughty about it, of course: "what are these people thinking?" So I ordered some LaBella nylon-coated flats and played with the rounds while I waited (they came today). When I started with the rounds, I found them to be sticky and pianoy, hard to slide on, and just too bright. But in the three days I've had the bass, they seem to have changed -- sliding, in particular, has gotten a lot easier, and, to my ears, the sound has improved. A lot. They've gotten darker sounding, but have a very cool-sounding attack. Now, I haven't played real roundwounds in years and years. Is this what they do? How much more will they change? Will the cool attack last awhile? I am kind of tempted to send the flats back and roll with the rounds (fingerboard be damned!). But everyone loves the nylons with Lightwaves. So, can someone offer advice?