I think the double-ended ones are much better performance-wise. I've always been told by other members on the LG that the double-ended quartz capsules are better than the single-end ones.

@Mike: Yeah, I've also read opinions like this... But they could be easily based just on a faulty series of single-end capsules issued once that made people hate them.
I can't see any big difference - three supporting points in both cases and a smaller capsule in the case of single-end version is rather a performance advantage (if I'm not mistaken...).

One major difference is the insulation distance - the linear does not have two points with full mains voltage close to each other, but really as far as the overall size allows. That means the gas fill design has one constrain less, so in the theory could be better optimized for the efficacy/life.
Or lower cost...

This looks like a logical explanation. Although flashover voltage for a dry air (40% of rel. humidity) is about 1mm for 1kV at 20 deg. Celsius, it's something different in a halogen capsule that's hot like hell inside. That's probably why incandescents sometime got arc between filament supports (or a partway) when filament opens although the filling of a regular GLS might support it in a different way. The other reason to put them further apart might be vibrations that could shorten the distance in case the filament before EOL is slack.

Btw. (as discussed in another thread), here you can see those 100,000 switching cycles directly on the box.

As long as the filament goes to the pressed quartz tube, the flashover wil be over before it starts

Nice to see 105 watts incandescent halogen bulb here. I wish we have those incandescent halogen bulbs sold in our market with this wattage rating

What's the maximum for this kind of lamp in the U.S., Robert? You don't need such a high wattage as at your 120V the same wattage is brighter than at our power system.

All I can say is that the Chinese GE halogens are horrible. And it seems that all halogens seem to dim out when run horizontally. They apparently have to be run vertically or they'll dim out fast (the capsule gets a silver coating on it).

The maximum wattage for incandescent halogen general purpose lamps we get are 72 Watts. We have 150, 200 and 300 Watts incandescent light bulb that are exempt from the ban.

In the past Philips and its knockoff used to sell up to 150 Watts of incandescent halogen bulbs in BT15 shaped envelope.

Thanks, Robert.
Here, you can still get classical GLS incandescents up to 100W either as "heaters" for hen houses, greenhouses etc. - to circumvent the bans or as rough-service lamps.
I haven't seen anything stronger than 100W for years though.