Mr E gives choices but he does a 33 VG ratio which is great. It think it goes great with Lemon Ice but it might be a reason I think his tobaccos like Laker Blend is a bit dry. This is the reason this ejuice is on the list of tobacco ejuices that did not work for me. But having a house blend of 33 VG is unique.
Some places are like Fuzion Vapor that offer a 65VG blend but you can customize it. At 65 VG you get some really nice vapor (as you can see here). I recommend going with their standard blend at first, as they often tailor make their juice to perform the best at their custom ratio.
Goodie Juice only offers 50-50 blends on their tobacco extracts. A lot of vendors do a fixed ratio. I would not recommend going with a vendor that does this with too low a VG. The Goodie Juice 50-50 has an amazing combination of flavor vapor and juiciness. I graphed out when reviewing my previous favorite Vita Bella and I did a video comparing it to my current favorite extract here.
Some juice at 100 VG taste a bit burned. I don't mind the lack of throat hit on some of these. Clouds of Vapor Butterscotch is 100 VG has an okay throat hit and does not taste burnt.
Virgin Vapor has a similar juice that is adored by many. I can't wait to try it. Remember to use a link on this site like this. so I can try more flavors from my next my next order from Virgin Vapor. (Here is ECF's chat VapeHerClouds impression.)Amazingly ecoPURE created a 100 VG juice that has an amazing throat hit. The taste can only be described as perfect crispness. Luckly, Virgin Vapor gives the option to use it as a base. They use ecoPURE as a base on my favorite ejuices; Creme Carmel, Lemonade, and their Pomegranate. Although Virgin Vapor doesn't offer ecoPURE on their absolute line, don't let that stop you from trying their Naked Vanilla.
I hope my humble explanation helps you in making an informed decision for what VG PG ratio to order. Experiment and see for yourself but 50-50 is a safe bet IMHO; unless the vendor specializes in something else. To understand what I mean by a dry and juicy ejuice you can see some examples and an attempt of an expiation here.
If you have any questions or know a ratio that works great for you and why leave a comment below.