Van mounted or storage based system

Hey guys, newbie here thinking of getting into the trade. Questions probably been asked 100 times before, but wondered what your thoughts are on van mounted or storage based systems. Interested to here from experience the pro/cons of each method.

Based in a hard water area (tds 280'ish) so requiring full ro systems.

Leaning towards storage based system as guess production going take a while.

Sent using the Window Cleaning Forums mobile app

If you have the space then storage based is far cheaper. Van systems work if you don't have any room, but you can get a van system that will produce 250+ litres an hour. The van mounted system also is quite heavy so reduces your payload 

I've found having the water filtered and stored in the garage then pumping to the van a big help. If you have the space without doubt best way.