Christopher
Moderator
I have used all the above but prefer to downstream, just personal preference when House Washing or Building Washing.
Buy the X-jet and give it a try as there are lots of opinions about everything and it will always end up being what you like, not what other people like.
With the downstream injector near the end of the hose with a 30', 50', 100' hose or with an X-Jet you will be moving buckets or containers around the house or building and there will always be the chance of the bucket tipping over whether you trip over it, the hose snags it or whatever.
With the X-jet you can run a good length of chemical hose so you have longer reach before moving the bucket too much.
Give them all a try and see what you like as that is only what really matters in the end.
Buy the X-jet and give it a try as there are lots of opinions about everything and it will always end up being what you like, not what other people like.
With the downstream injector near the end of the hose with a 30', 50', 100' hose or with an X-Jet you will be moving buckets or containers around the house or building and there will always be the chance of the bucket tipping over whether you trip over it, the hose snags it or whatever.
With the X-jet you can run a good length of chemical hose so you have longer reach before moving the bucket too much.
Give them all a try and see what you like as that is only what really matters in the end.