I myself have not shopped at mad vapes but when I was first starting out I used http://www.myvaporstore.com/default.asp
for most of my devices and supplies. They have fast shipping and very good customer service.
As for the device selection of madvapes.com it looks kinda "all over the place" whereas myvaporstore.com may offer a better selection for the stage you are at.
I will link you the items I started out with when I switched from the cheap cig-alikes. I was very pleased with the setup and it actually lasted long enough to get me through until i switched to advanced devices. I was actually able to donate my setup to my neighbor 6 months later so he could start vaping.
This is kit i started with, on the products info page you can choose all kinds of different options but i would definitely recommend getting the Vision Spinner 2 1600 mah battery for longer life and a better hit.
For the Cartomizer options, I would get any one that says "Clearomizer" or the innokin iclear 16D.
I would also suggest that for whichever cleromizer you pick, browse their site and look for the replacement coils so you have a few extra when one is just too worn out to get a good vape from.
The coils for the iClear 16D can be found here http://www.myvaporstore.com/Atomizer_Hea...16bdah.htm
Please feel free to come back and post about what you got and how the experience went.