Hi Andrew - welcome aboard. Higher nic content shouldn't cause a decrease in flavor. I haven't tried bloog's flavors myself. It may just be that you don't like their flavors. I had a look on their site at their
juice, but coldn't see a PG/VG ratio there.
PG stands for Propylene glycol, and VG for vegetable glycerine.
PG enhances nicotine delivery and flavor. It also produces some vapor.
VG produces most of the vapor.
It sounds like you may want to try
juice that is PG/VG 80/20, or around that. As I don't know what Bloog's PG/VG ratio is, it may also be as I said above that you just don't like their juice. They sell blank cartomizers so you can fill them with juice from any vendor.
I'd suggest picking a couple of different juice vendors and buying some small sample bottles - 5-15ml from each one to try out. When you hit some you like you can re-order a larger bottle.
Here's a couple I've used that are different to each other:
Mt. Baker Vapor - discount code ecf for 10% off:
Mt Baker Vapor - Electronic Cigarettes, USA made E Juice, and Accessories
Vape Dudes - a 40% discount on the forst order only with discount code VAPEDUDES:
The Best eJuice - VapeDudes.com - Hand-Crafted Gourmet & Organic - 100% USA Ingredients
And you'll find others in the e-Liquid forum. You'll see different juice vendors there and lists of people's top 5 and so on:
General E-Liquid Discussion
Some e-juices need steeping and some don't. Tobacco flavors often do need steeping. I've written a short bit about steeping on my blog here:
http://www.e-cigarette-forum.com/forum/blogs/kiwivap/3224-steeping-e-liquid.html
Hope all that is of some help to you. Cheers.