CFP, wfp is like most pieces of equipment and most tools, and in the wrong hands the most expensive equipment will still do a crap job, and in the hands of somebody that knows what theyre doing and how to use it even the cheapest of system will do a very good job.
At the end of the day its just water going up a pole and through a brush, just buy wiseley and what your pocket can afford and think about what you need on your type of work.
Would a trolley set up be more use to you than a van mount? or would a backpack set up be ok.
I started with a van mount then got rid of that because it didnt suit my work and purchased a trolley system, and neither did that, so now all we use are backpacks as these are what suits our work.
Either way i would never go back to my ladders as its enabled us to do work that we could never have done and at the same time made us earn lots more moey.