In order; comfort, weight, handling, and rolling resistance.

Easy to tear when installing; loses about 25psi in 24 hours; more expensive then most butyl tubes.

These tubes are more expensive then most, but if your wanting a noticeable comfortable ride then these are better then butyl. Latex pumped up to 110psi feels like butyl pumped up to about 70, so the ride is plusher and you notice it. The rest of the strengths are barely perceivable if at all. According to tests I've seen in rolling resistance you save about 5 watts which is something I doubt anyone can feel-but it's there and racers might like the slight edge.

You have to be careful installing these tubes, and I recommend you put Talcum powder on the inside of the tire (they come pre-powdered). If you catch the tube with a tire iron it will probably rip so try to use hands only.

These tubes lose about 25 psi in a day so you have to pump them up for each ride, but ultralight butyl racing tubes lose about 10 so either way you still have to pump up the tires before a ride. One reviewer reported pinch flats, he probably didn't realize they lose that much air in 24 hours and rode it low on air...that's the only way they, or butyl, will pinch flat.

Summary, overall I like them better then butyl and rated them outstanding. I gave them a 4 star value rating only because of expense.

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Butyl tubes before, Latex over 25 years ago but brands unknown.

Doesn't easily puncture during ride. Light

Latex=leaking. Must be pumped every day.
Most seriously, there seems to be a weakness about 2 cm. from the ventil. It blows here without warning.

Do not buy...it's too unpredictable. Especially, I wouldn't race with this one...

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Other butyl tubes, no other latex

Light weight, smooth riding.

Have to pump every day.

Used the tubes during 6 day Alps crossing, 12000 hm, high speed rocky descents. No flats, no problems.

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butyl tubes of all kinds

Light, responsive, comfotable, fast, very few punctures, when used with fast kevlar tyres (ie Kenda Kosmik Lites) seriously quick...worth 3-4 mph

A tad expensive, need to run at slightly higher pressures as they squash easier than butyl tubes (ie in bottom of holes, crossing shallow ditches etc).

Top product, worth the money, will make yer bike FLY...........

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Super light butyl tubes..explode, air B...heavy,slower, less sensitive, some Dutch Latex tubes ?? similar to Air B

Very light tubes with good feel... good puncture resistance.
Makes your bike really fast...

Valve stem not threaded which means that you cannot use a lock-nut. I have had several failures due to the tube around the valve puncturing due to the valve twisting in the rim caused by heavy braking on the front or acceleration on the rear. This cannot be repaired...very annoying and frustrating.

Excellent tubes but could be even better with threaded valve stems. All the junked tubes are due to this as when the valve tears out of the tube it cannot be repaired. If it was'nt for this they would probably last for years and years...

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Panaracer Greenlite... dont make me larf... rubbish.
Standard butyl... heavy with less feel.

Lightweigth, great pinchflat reduction

Do leak some air, because of latex composition. Need regular inflation.
If a (rare) pinch flat occurs, the tube may "explode", loosing pressure immediately.

The best compromise between weight and pinchflat resistance.
Butil light tubes are too thin, and do not offer the same resistance.

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Common tubes, and sh*t called MAXXIS Flyweight (4 tubes in one month!)

It effectively leaks air. This is latex!

Simply resistant. Simply light.
If a day I should ever switch to another tube, it means that the market really proposed a new, revolutionary product, or that I use tubeless rims.

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Many other butyl tubes, as well as a s*!t called Flyweight (4 tubes in a month!)

Very light and skinny.

Prone to pinch!

Those damn tubes pinch a lot (yeah, they're quite light, but you never need to remove weight from a tube), I bought a pack of 10 and for using I needed to fit a pinch armor into my tyres to avoid flats. So the weight losed with the tubes I gained with the pinch armor.

Stay very far from those damn tubes, another problems is that the pinch cannot be fixed, the normal repair kits don't work with latex tubes.

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Quite others

light, green

leaks like a sieve; really, really expensive

id recommend as a race only item- mine leak 10-15psi a day, and having to pump your tires every time you ride gets really old.

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standard butyl