I've got Juicy 5's on my new bike. I started a thread a while back about issues with modulating the rear brake (it's to grabby), and were basically told to "learn how to ride noob".
I'm a total convert to the Juicies now since they've made me lazy and I like the lack of effort they allow me to put in. But in no way is their modulation anywhere near the precision of well setup V's.