I'll second the Ego or Riva crowd here. Everyone starts out wanting something that looks like a cig. Not saying that these are bad, but the tiny batteries come with their share of room for improvement. The Ego and Riva are thicker, and you tend not to hold them the same as a cig due to the buttons. However, Their overall length is roughly the same, they last about 6 times as long, and are powerful enough to handle a wider range of atomizers/cartos/etc, particularly those that have a lower net resistance (a.k.a. LR). LR cartos, either single or dual coil, will generally provide more "throat hit" you describe as lacking from the blu.
For $35, I'd be really surprised if you were disappointed with the "RIVA 510 - CARTO DELUXE" LF offers. Even if the included ones don't end up being the cartomizers you want to stick with, you'll have everything else you need to experiment with other 510 (the most common) types of attachments. I'd suggest the "dual coil" option just under it, but they're out of stock.
Electronic Cigarette - Starter Kits - Riva 510 I'm in no way affiliated with Liberty Flights. They just tend to have good deals on kits (Always make sure to click the 20% link at the top... no idea why they do that), so feel free to shop around. The suppliers listed here are in good repute with this forum's members, to name a few:
Forum Suppliers List
Also, if you're thus far sticking to the prefilled cartos from blue, you can have a lot more options for juice. Some have more throat hit than others, and it's a matter of taste what you'll like. There is pretty much no limit to the flavor you can find... anything from tame vanilla to...
bacon.
