Glad you joined the fun. I've been fighting the stray sawdust battle for some time. Finally moved my DC out of the shop into a covered area. Now all the collected stuff goes outside into a 30 gallon chip collector, then through a Harbor Freight Dust collector. HF puts that 2 hp unit on sale on holiday weekends sometimes. Got two for about $150 each with the sale price, plus a 25% discount coupon. Pretty good power, and you can upgrade the supplied impeller to one from Rikon--a tight fit, but a LOT of suction. I replaced the filter bag with a Wynn 1 micron drum filter, which cost more than the DC unit itself.
Hoses from the collector's through the wall port can be hooked to any tool in the shop.
I just installed a Shark Guard blade guard for the table saw that also collects sawdust coming from the blade above the table. Really cuts down on flying sawdust.
My solution for the sliding miter saw is OK, but not great. I hung brackets above the saw and draped frosted shower curtains around it, and collected the bottom into a box with a dust port. attached. I'm finally going to add a porch to the shop shed and haul that saw outside for use. There just doesn't seem to be any really good way to control the sawdust from miter saws.
I've spent a lot of money on connectors, so pick a brand and buy parts from that brand's selection of DC parts. I finally settled in on Rockler parts. Seems 4 inches isn't four inches from one brand to another.
Let us know how you approach the DC problem. We're all very interested in solutions to this universal problem. Here are a few pictures of my solutions so far...
Pix 1 is the Harbor Freight setup outside my shop (in a covered breezeway) including the chip collector and water resistant electric plug.
Pix 2 is the hoses for a long 4 inch hose and the 2.5 inch hose leading to the Shark Guard unit on the table saw. There's a blast gate in the 2.5 inch line for when I'm not using it.
Pix 3 is not very clear, but shows the sliding miter surrounded by the shower curtain. I will be adding a "scoop" just behind the blade, attached to the 2.5 inch built in DC port on the saw. I also found that if I make cuts by pulling the blade toward me on the first pass, the cut blows most sawdust back into the DC setup on the main cut, away from me. If you do the shower curtain setup, use aluminum duct tape to piece the curtains together on top. and to drape a curtain down in front of the saw to keep the flying dust in the collector.