I live with the consequences of using these threadings. Using 2 stainless ferrules, a triclamp and a tefflon gasket is a much slicker way to go. Faster to undo, no tools required for tightening and releasing, better chance of making a positive seal, position the pipes in any of the 360degrees (rather than the two needing to stop where the threading does). No repacing tape when re-threading. Parts become interchangeable. Make a 2' or 8' column, or have a separate column un-packed and ready to interchange. or split the pipe into 2 sections and only use half of it sometimes. Or pack them with different items. The cost is also comparable (I think a little cheaper in my case).
You can also solder it all together. No welding or brazing needed. They are harder to find, but can be ordered of ebay. I get mine from
http://www.stainlessprocess.com" onclick="window.open(this.href);return false;" rel="nofollow which is a local company but do ship. Surely every area in the world hads a need for food processing, so there is bound to be one in your area as well.
First time I did it I ordered "short" ferrules, which turned out to be a mistake as there was a very small amount of play which when I soldered it all together was slightly noticeable over the 5' of pipe. The "long" ferrule would have made for a much straighter connection, so I order long from now on.
Stainless is harder to solder than say copper to copper. I found that its a breeze if you get it very clean (no finger prints) and make sure your flux does not ignite before you are established flow. This for me meant using propane rather than mapp gas, so the high temps of mapp do not ignite the flux.
Just got myself outfitted with brazing gear (mapp gas, brazing rods and brazing flux) It costs much more to outfit yourself with brazing ($200 for the brazing rods alone, compared with $20 for high quality silver solder) but the rods are 15% silver which is much more silver and the final product is stronger. Not that I have had any issues with my soldered joints.
For me, ferrules over threading.
See, here you thought I was just a smartass but I still helped you just the same... 
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