The problem with the single walled corrugated pipe is that it will crush if you clamp it too hard with something like a fernco or hose clamp. Double walled ADS type pipe is another animal.
</font><font color="blue" class="small">( we use these Fernco fittings very often, for connecting ADS (corrugated black plastic) pipe to the green sdr-35 pipe, and also to white pvc. we use them for french drains and rain gutter drains. as long as it is not a pressurized application, they work great. 4" retails about 30 bucks i think. )</font>
I picked up 2 of these today at a pipe place only 2 miles down the road from me in the old neighborhood I grew up in.
I paid $9.67 a piece for the 6" size.