Nothing wrong with Freud!! They make high quality stuff.
Problem with my system is it moves semi automatically like a CNC so you need a hose that will flex easily with it. i just built a bucket under the router yesterday and will be hooking up the 4" S&D pipe to it via a closet flange (IE: what you use for a toliet). That takes care of the bucket underneath. I have the same setup (4" T with 2" coming off of it) and I want to run it up to top of table and then I'm thinking a very flexible hose with a bend in it (for slack) to attach to the fence port which is 2 1/4". The odd ball size of the port is the biggest hassle. I also want to T off of the 2" pipe with another hose so I can have a bucket on the left side table edge. Although I must admit that with a 4' wide table I haven't had a lot of debris reaching the edge like on a smaller table. That might actually be a downside to being that wide. I also have more room in front of the plate than normal but at 6'2" it isn't an issue for me. One upside of an oversize table is room to lay stock. I don't need a side table to hold pieces before or after I am running them.
Mostly I am just looking for ideas on what other folks have done. And specifically good suppliers for pipe and hose that can interface between vacuum system sizes and standard sewer/drain pvc. So far it has been a lot of trial and error.
4" isn't that big of an issue as dryer type hoses work between the S&D and machines. I like using the semi flexible hard wall type stuff like below. Sturdy, looks good and lasts a long time. But it doesn't work for locations where the port is in motion. Or address locations with smaller ports.
View attachment 403965
And then there is the issue that some manufactures will use one size and others use another. Nothing seems standardized.