But, if I were to go the eGo route... the starter kit from Elite Vaporworks, and maybe a syringe and juice is all I need (along with hours reading on here until I figure out what I have in my posession)? You say you use a smokestik- looks just like a blu. Is that for when you're out & about?
If you go the eGo route, skip the eGo and get a KGO. They're physically the same size and appearance, but the KGO has a better and longer life battery. I just got mine yesterday. Pulled a battery off the charger at 8:30 this morning, vaped pretty heavy all day, and haven't needed to swap batteries yet. It's an AWESOME change from the hassle of switching batteries almost once an hour with my old cigarette sized ecigs.
If you get a KGO from Hoosier E-Cig Supply, the kit comes with 2 atomizers (handy) and 6 pre-filled cartridges (worthless) so add a 5 pack of Smok 1.7 ohm XL cartomizers to your order. And you might as well get a drip tip to use with the atomizers.
That's all you need for hardware, now you just need some juice. The "Vapriot" line of juice from LeCig meets you criteria of being USA made. Also, at $10 for 30ml it's some of the better priced stuff out there. And their shipping is free. Get 3 30ml bottles.
That should be enough to keep you vaping for a month or so, for just under $85. And MUCH, MUCH better equipment than the Blu.
As far as refilling cartos goes, my advice is to just bite the bullet and learn how to do it. It really is pretty simple. It's one of those things that sounds hard until you do it, and then you can't even figure out why you had thought it would be hard. It's just squeezing some juice from a dropper bottle into a little tube. That's it.
There's two HUGE problems with limiting yourself to pre-filled cartos. The first is that you'll severly limit your selection of flavors, and there's some really tasty stuff out there that just flat out isn't available in pre-filled cartos.
The second, and biggest thing, is cost. I have one of the Mistic brand e-cigs that they sell at WalMart and Flying J truck stops. Cartos for that are $15 for a 5 pack. Given the 1 ml per carto rule of thumb, it would cost me $270 to get the same amount of juice that I recommended to you above for $30. And the $30 gets you MUCH better tasting stuff.