Op #1: Silicone hoses
Meh. I am not sold yet on the durability of this hose. Although the inner diameter seems to be the same, the fit is much looser - not nearly as tight. If the connector has a lip or barb, you have to be careful that the cut you made on the end does not catch and tear the hose.
The outer diameter is larger than the original hose, and is tacky. I set it on the ground and the hose was immediately coated in fine dust that is not wiping off easily.
When there is no barb to seat around, the end appears to have some gapping.
But the end result does look nice.
I have not yet replaced all the hoses as the light is fading and the mosquitoes are out in force, but if this all seems to hold vacuum I will continue.
Decision: The jury is out until I put some miles on it and see how it holds up.