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What would be a good go-to for someone who needs a portable solution (and has an iPad 4 on him at all times) and who just wants to do basics (ie. not doing wacky HDRs)?
There is a lot of good comments above, some better than others, imho.
This is my standard advice. Ask yourself "why am I taking this picture?". Answer that question. Generally, I am asking people "why" when we are talking about composition, but I believe it can applied to the whole process.
This can be a very difficult question to answer, conceptually, because it forces you analyze what is often just vague notions. However, equipment purchases should be based on good common sense.
If your intent is to take photos that are stunningly lifelike when printed as 30"x40"s (that is really big for you metricized folks) then no - doing post on an iPad is probably not going to work. Conversely if, it is more about the process of creation than the final work... then maybe an iPad will work. Ask David Hockney.
If your intent is to create images that will only ever be displayed on an iPad, then sure - an iPad is an appropriate tool. Usually the image quality is limited by the least capable link in the chain from Camera to Final Display Medium (This chain includes the photographer's abilities).
If you are planning on taking only a few photos at a time, then workflow is not really a major consideration. If you take 300 images per project, that then need to catalogued and categorized - then workflow is probably a consideration.
Photographers often pay way too much attention to Image Quality, at the expense of Emotional Quality, Compositional Quality, and Message Quality sometimes. Look at some of the early Doisneau's, for example. It is a good idea to maximize the IQ (within the limits of your processes) - but not at the expense of the other Qs. Except when sub-par IQ gets in the way of the appreciating the image. Especially if you are shooting for yourself. If you are shooting for a client, IQ is often paramount. But not always.
Just have fun, and show your images. Don't be too hard on yourself. Photographers are often their own worst editors. No one can see that one bad pixel, trust me. Except for that one annoying damn photographer who comes to your shows and points it out everyone. Should be banned...
Some of my favourite photographers use very unsophisticated equipment to produce very sophisticated art. Old polaroid cameras, home made pinhole cameras, etc. Just have fun, and ignore everyone who says you are doing it wrong. Post your photos and pay attention to the advice of people who create photos you like to look at. And then only if they can both good and bad in your photos.
Good Luck.