The trouble with this type of question is that everyone will have a different type of opinion based on their own experience.
The best way is to look at friends systems, see what works well for them, work with someone for a day. And then trawl through all of the 'blurb' from all the companies and see who sells what you want, at a price that you are happy with.
Also remember that very few get the complete system right for them first time, it becomes a growing, adapting thing that grows with your work and preferences.
If you can afford a lot of money you will get a hassle free system straight out of the box, but even with that there are many variables that you will tweak, and add to over the years.
The basic equipment and systems are all fairly similar in actual 'mechanics' it's is often the packaging that varies. So your personal needs and opinions are very important. We have several people working with us on our work, and each chap has his own preferences, different poles, reels, brushes, and RO units, so you have to make your own mind up.
Don't allow yourself to be 'sold' a system, go and 'buy' one, there is a difference.
There that's my opinion, doesn't mean a lot and probably doesn't help you much either! But it's what I think.
Have fun choosing, and this forum (and others) will help you a lot with the techniques of work.
Alex