Just wondering if anyone has experience with both to share if the double duty is sufficient. I can see that the Control Spray Max has the air being delivered via the tube and hence the air intake can be quite far away from where you are spraying, but would there be any difference in the actual spraying? The storage space required is quite huge between the two models, and if I could get away with not having to store all that hose and the seperate air intake, I think I would go this route. Oh.. and its cheaper too! So are there any other major differences or will the Double Duty model do just fine? Thanks.