I'm not ignoring anyone's advice, I'm not saying anyone's wrong. Don't get rowdy ;) I've seen threads go this way before. Relax!
I'll try to shore up a couple things:
1. I came here with a pretty good idea of what I was looking for, based on the areas I expect to go, the speed I want to set up at, the weight I want to carry, and the type of conditions I know exist (because I've been in them several times). Modularity is another factor. I didn't ask what the best option was because I didn't need to; I know what I'm ready to try out. A good tarp and a bivy. Other people do it, too, not just me.
My OP is specific!
2. People are latching onto whether I have money or not. Get over it! I'll take care of my finances, you can ignore that. I just wanted to imply that being a "budget" bivy wouldn't impact my decision, only functionality.
3. I now have some understanding that e-Vent is the best WPB fabric for this, and I understand the limits of ALL types of Bivys. All I'm trying to figure out is who's making an e-Vent bivy with a bugnet opening around the hood today.
Read #3 again! That's the limit of my questions!
Remember that stuff I said in the OP? That was six pages ago. I have learned, and my opinion and expectations have grown, too. My OP is ancient history thanks to so many people's good advice.
I feel like it's falling on deaf ears, but THANK YOU for your help. Don't stop being helpful to ridicule me because you *think* I'm some fool who's ignoring advice and looking for a perfect shelter that doesn't exist.