That atomizer in the pic does not look like the M401 I have at all. I have 4 attys and am using 2 activley, 1 on a USB passthru and the other on a battery. I will say the cart is not big and does not hold alot of fluid, but I get between 10 and 20 good huge hits, which is fine since I hit 2 in a row, then recap off the fliud level and set it down for a hour or so.
2 weeks now, no problems except me flooding the atty. Which I blew out and it works fine now. As for cheap, the starter kit cost $55.00, I was consideing the M40* series to be mid range biginer class. Also my batterys last hours and hours, I have all 3 sizes and even the smallest last hours.
I had read a tons of post here before buying the m40* and the guy in the fedora video sealed the deal, he shows the m401 aganst the 510 and the vapor production for the 401 is like twice as big. It is very nice to have a huge cloud. I am not sure i want a "screwdriver" or another huge device, also I do not want to hear a sizzle. Just give me the smoke and the nicotine.