I use the Lightspeed 20XLc. Here's what I don't like about them:

Lightspeed's newer Twenty 3G series of ANR headphones address nearly every
problem you mention (and a few you don't mention, like their poor
workmanship and durability) with the 20XLs.

I've owned Lightspeeds from their first 15s. The old ones worked great,
when they worked. The new ones are close to perfect.

I'd buy another pair of Twenty (or Thirty) 3Gs in a heartbeat.
--
Jay Honeck
Iowa City, IA
Pathfinder N56993
www.AlexisParkInn.com
"Your Aviation Destination"