Now that I've gotten my stuff, this is what I *wish* I had done, would have saved a bit on my particular model and shipping.... I ordered from a place that, while it was not *entirely* overpriced, wasn't exactly the cheapest I've found.
I went with the 510, and am *very* happy with it and the PCC. I've used this sucker at work a *lot* and have not run out of a charge on my battery all day or night. The PCC really makes the 510's short battery life livable. It's a little longer than a pack of 100s, but close to the size of a Virginia Slims or Misty box. If I could vape at my desk at work I might like a passthru better, but I am not able to do so, so the PCC is an essential for me.
For the 510s, I see two pretty good deals. I would probably choose between the two based on what liquid I wanted to go for -- the standard PG/VG type mix, or a PG-free type. I'm not having any problems with the PG at all fortunately so
If I were going PG-free, I would go with Cignot. They're one of the few distributors of the ECOPure eliquid, and have several great starter kits. They have a plain starter kit for $35.00, and a starter kit with the PCC for $65. They also have a 510 single plus PCC (no backup battery or atomizer tho.... uh oh for when one breaks!) for $45, and a starter kit plus USB passthru for $62. Their ECOPure e-liquid runs about $1.00 per ml, but they also have some other VG-only e-liquids for a bit cheaper, and some PG-containing liquids for $0.50/ml. Their VG-only liquids have some in very small containers so you can decide if you like them before spending a ton of money on a large bottle. And they have free shipping!
I didn't order from Cignot because I wanted the copper colored 510. And if I'd read further on this forum and saw the 40% coupon for MyFreedomSmoke's hardware (code "smoke"), I would have ordered my 510 from them instead of ordering it from the expensive place. I ordered MFS's e-liquids, and I like the first one I opened, the Vanilla, so much I haven't tried any of the others yet. The 510 starter kit plus PCC is $61.14. They also sell other kits, like the M401 Mini (starter kit plus USB passthru is $55.14). They have a *very* wide selection of eliquids to try, although you cannot get VG versions of their sampler kit liquids. I got 6 flavors from their sampler kit, each in very neatly labeled 10ml bottles. I know the menthol and clove are going to be *very* strong -- each of them I could feel the strength of with my eyes when I opened and sniffed the top, and could smell each when I opened the little bags they came in. They charge $6.00 for shipping, but it is Priority Mail shipping. They also offer Express Mail shipping for $19.99 -- overnight to some areas, 2 to others. I wouldn't use it unless you were in an emergency situation as the Priority Mail shipping is a 2-3 day option.
I hope this helps. I love my 510 but there are others here who like other models.