I have never ordered the E11 but I do order from them often. I have read some bad
reviews of the company but honestly I have never had any problem with them. Overall I think the quality of their products is a little below some of the other companies but the price is so much lower its not a problem for me. Ive never had a product arrive DOA, and they replace any atomizer that dies within a month. You can even email them of the deaths and wait till you have several to send back...to save on shipping. BTW they ship very fast, with tracking and they are NEVER out of stock. I ordered from a popular u.s. company...which I wont mention by name for fear of fans uprising (just kidding guys),
three days later ordered from e-cig, the order from e-cig got to me quicker...by over a week.
Bottom line you get what you pay for but there are problems with even the most expensive ones. I would order enough spares to make the shipping cost worth it, which you can see as you fill up your order cart.
BTW some of the U.S. companies products are from e-cig, they print whatever package you want for wholesale and bulk orders.
Good luck and let us know how it goes.