Shop-vac vs. D/C?

[chopnhack]

When would you use one over the other? I ask because I am thinking of incorporating the ability to pop 2 reducers into my current design to allow me to use the barrel for both the d/c and the shop-vac.
Thanks

[bruegf]

From my limited experience with DC over shop vac, I would think that 2.5" hose is too small to get enough cfm to carry the dust adequately without the higher static pressure of a shop vac.   Even dropping from 5" to 4" makes a noticeable difference on my system.

Fred

[dbhost]

DC is better overall, with the exclusion of handheld sanders. They seem to like the greater static pressure and lower CFM of the shop vac...

FWIW, I have 2 systems, a DC / Thien setup, and a Shop Vac / Thien setup... I have been known to use both at the same time...

[chopnhack]

Good to know, that will save me from having to make two thien units, thanks guys.