I'm still a noob, myself, but I liked Blu quite a bit. I started vaping less than a month ago, with a Blu starter kit. I have since switched to a T-Rex (...it's an eGo, basically, with a slightly bigger battery) because the teeny little Blu batteries just didn't hold their charge long enough. I would suck one dead before the spare had time to charge and then smoke an analog cigarette or two while I waited for the batteries to catch up to me. Other than the lousy battery life, though, I liked pretty much everything about them. As a vaping starting point, Blu was a joy and a revelation. Small, lightweight, VERY cigarette-like and, freshly opened, the Blu cartomizers easily produce as much or more vapor than I'm getting from my T-Rex in any configuration from dripping onto the atomizer through various (510) carts and cartomizers. I liked their "Classic Tobacco" and "Java Jolt" flavors so much I recently bought more to use on my T-Rex while I search for comparable/better juices. (Aside: I think they're probably Johnson Creek VG "Tennessee Cured" and "Espresso" but the higher nic levels I currently prefer don't taste quite as nice.)
I'm not USING my Blu-cigs any more (except for dress-up occasions, they're quite stylish looking) but I don't regret the money I spent to START with them at all. If I had STARTED with the T-Rex and any of the absolutely dreadful juices I first purchased I would not have lasted a week before buying a carton of analogs.
No they're not ideal for me, probably not ideal for any heavy smoker/vaper, but they're not a bad place to start.