ECOpure is awesome. Best vapor production I've ever experienced with any liquid, PG or VG. It only comes in the stock Rich, Regular, Medium, Fresh and Menthol versions, so you have to go DIY if you want to flavor it. I have some Fresh on order right now that I'm thinking about mixing with Cappella flavor drops. I'll post here with my results. If you look around their site and at Juicy Liquid you can find information on how to mix it up. There are a bunch of threads about it here on ECF too.
My experience with ECOpure right now is that the Rich version has a very textured and subtle flavor to it. It's not sweet at all. It's smokey, but not in the "hits you over the head" kind of way that Hilton, 555 and some of the others are. When I want some flavor, I just hit my cart with one or two drops of a flavored liquid and then fill the rest with Rich. The hint of sweet is nice. But it's great all on its own as well. I like the Regular too. Haven't tried the Mild or Menthol so far, but I have some of those on the way too.
My experience with ECOpure right now is that the Rich version has a very textured and subtle flavor to it. It's not sweet at all. It's smokey, but not in the "hits you over the head" kind of way that Hilton, 555 and some of the others are. When I want some flavor, I just hit my cart with one or two drops of a flavored liquid and then fill the rest with Rich. The hint of sweet is nice. But it's great all on its own as well. I like the Regular too. Haven't tried the Mild or Menthol so far, but I have some of those on the way too.