A single image is provided which can be booted into an i686 and x86_64 live system to install Arch Linux over the network (emphasis mine). Media containing the [core] repository are no longer provided.
Contrary to common belief, Arch Linux DOES NOT HAVE to be installed from the official ISO. Arch can be installed from pretty EVERYWHERE, be it any distro already installed on the computer, an Ubuntu or Fedora LiveCD, or even a running Linux machine over the network (detailed guide here). You can also try ArchBoot or even create your own custom ISO. In all cases, you'll end up with a pure Arch Linux installation, no tricks.
In fact, installing Arch from an Ubuntu LiveCD is even easier because you have graphical tools available that can configure your network (networkmanager), partition hard drives (gparted) and edit config files (gedit). As a bonus, you can research any information you need at installation time using Firefox.
Ironically, Arch can be installed from an Ubuntu CD faster than Ubuntu itself.
Distros like Manjaro allows such affected users to install and experience Arch in some form without having to cry over their non-functional network connection at the installer stage.
Instead, use a distro that takes care of everything for you. ~ because if you can't solve minor issues on your own, you're probably not going to be able to maintain an Archlinux install very well, anyway.
but on topic:
Manjaro looks okay, at first glance. but i do think they handled the pacman 4.1 issue, rather poorly and didn't even do basic research on tools they were using in their distro. (that's just embarrassing, if you ask me and surely doesn't gain any trust or confidence in their ability to manage a distro). myself, I probably wouldn't use Manjaro (actually not 'probably' - i wouldn't), but that is because i am already quite happy with Arch. That being said, if it allows the odd person to test out Archlinux - that's cool - as long as they don't expect Archlinux is going to hold their hand the same way ~ and as long as they don't flood Archlinux forums trying to get help with problems.
I think that really it's a question of how hands-on you want to be with your system. If you want to and intend to tinker, not just in the initial set-up, but repeatedly, then you'll probably get better mileage using a distro that's designed with people like you in mind. The opposite is the case if you are not a tinkerer by nature.