I have come to prefer the standard tube over HD. I've also become more interested in tube construction and materials than their thickness. A spike that makes its way through a tire casing won't be slowed down much by a few millimeters thicker tube.
I look for lap-spliced tubes over butt-spliced tubes. Higher rubber content than synthetic content. I just trust the lap joint over the butt joint, although I've never had a separation of either. I tend to believe the higher rubber content tube will take a patch better. I have nothing to base this idea on other than I have had patches come loose from predominately synthetic constructed tubes. I don't recall having a patch not stay adhered on a high rubber content tube.
I wear XL gloves. Getting my paws under a bead to feed a valve stem through the hole is challenging enough without raising the bar by using a tube that won't cooperate. HD tubes are expensive and hard for me to manipulate. I have a Michelin standard 21" tube on the front of the 650, with about 30,000 miles on it. It will be retired after this tire it is mated to wears out. How much more should a reasonable person expect from a dispensable item like an inner tube? If your tire breaks loose in the rough, and you do not use rim locks, that tube is probably going to get shredded, regardless of quality or thickness. I see that as a false security. I think everyone should use what works for them, including what makes them feel more secure about the whole experience. I just can't justify the expense, weight and difficulty in handling anymore.
...and this is about as close to a tire thread as I will get. I truly DGAF what you roll on.
“many a trip continues long after movement in time and space have ceased”- Steinbeck, [I]"Travels with Charlie"
[FONT="Century Gothic"][I]Sometimes your only available transportation is a leap of faith[/I] [/FONT]