P5 is well worth the upgrade price. Even if its broken (and I doubt it will remain like that for long) it has useable features far beyond P4. Hair is not wired. Dirk, I posted on this before. Its a user image. Look at my gallery here and on commune. I see a major improvement and have not opened P4/pro since I installed P5 and don't see any reason to do so. It renders just as fast using the P4 engine and only slightly slower with the extra features of the firefly (which is to be expected). I'm a happy camper.