Leaky - we are in total agreement that you should buy more collector than you think you need. Tool collections are always expanding , and a lot of guys end up buying things twice.
There is always that notion that getting what I can afford today is better than nothing though. Which is often what happens when presented with the price of "better" options.
Jed - I'd recommend getting the biggest cyclone dust collector you can afford. Oneida is the gold standard, but there are others that are serviceable. Grizzly offers a lot of bang for the buck too. Most don't start out there , but that's the yardstick in my view.
A lot of woodworkers start out with a single stage collector like leaky mentions. Search for Harbor Freight dust collector and read til you're cross eyed. Under $200 on sale and many modify them with a cartridge filter and a Thein baffel and its all the dust collection they'll ever need for a basement shop for a total cost of $300 +/- .
If you get a real dust collector ,not a shop vac, you really need to add some capacity to the DW745 in order not to choke the thing. See breathing through a straw above. The only real way to do this is through the guard - which a lot of guys hate.
See these guys for a a tailor made dewalt solution:
http://www.thesharkguard.com/index.html
Use a wye and split your dust collector's port to run two hoses, one 2.5" to the blade shroud outlet and another 2.5" to the blade guard. 3" or 4" would be even better. That will make the DW745 as good as it can be at collecting dust.
Oh, while you're at it you'll prob. want to buy a remote control to turn the collector on and off. Most of the Cyclones come with them standard, but fairly rare on the single stage units.
