I really like them too and it would be great if they could find a way to make the metal thinner so they accentuate the hole more. I've never had issues with the threading hurting me and they are the exact wearable length for me, they can be hard to screw on with oily fingers or long nails though. Below is a pic of my collection of tunnels 

I got mostly sparkly ones because I think tunnels are rather masculine/industrial looking and I like the interplay between the the idea of something being both tough and pretty.
Current: 8g lobes, 14g right conch, 2x 16g helix on left ear, 14g tongue | Goal: 2nds on both ears (likely), low helix on right ear or ear head (likely), nostril and half sleeve (definate once I am self employed and can have visable mods).

President of the Itty Bitty Plug Committee - Membership open to everyone with a goal size of 2g or less.
iam: http://iam.bmezine.com/?jessamine
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***Wes' mum***