I too enjoyed the comparison Sasquatch offered on the difference between system pipes and 'regular' pipes. I can vouch for the engineering issues with the single deeply bent system pipe that I own. While it delivers smoke well, and stays dry (I've never had to drink tobacco while smoking it) it does tend to gurgle starting about halfway through a bowl. I have three system pipes, and the other two are 1/8 bent and 1/4 bent and neither have any issues at all. The gurgling one is an 05 shape which is nearly an Oom Paul for those unfamiliar, my non-system Shannon 05 smokes about the best of any pipe I own as I've already related.
On the whole I'd say as long as one isn't seeking a perfect smoke from a full bent system pipe that 'the system' works well over all, having said that, I find it a little bit 'gimmicky' and not something I'll be seeking in future purchases. I own plenty of pipes which offer a cool dry smoke which don't have any system drilling at all.
YMMV
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I'm a jaded old Iso-Con, get over it!
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And of our holy herb nicotian,
And bring withall pure honey from the hive,
To heale the wound of my unhappy hand." Henry Buttes
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