1. I'm not allowed to source-post where you can get Novla, but I generally abide by the "if you can find it; you can use it-- if you can't; you shouldn't" mantra.
2. It's tough to say. Some say one, some say the other. There's really no consensus. The key is to make sure you use one. I might even try two different cycles, one with Novla & one with
6-OXO & see which you prefer for PCT. Other than that, it's really personal preference/trial-by-fire...