There has been a bit of discussion about the plastic/metal jerry issue on the HUBB, a search should reveal all.
Summary of other people's wisdom:
Metal - very robust, can be stored on side, don't leak, heavy even when empty (Wunderlich do a cute 5lt one)
Plastic - most leak espcially on bikes (vibration), can puncture in a fall, cheap and light
Not sure about the fasteners.
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Barry
3AJ Tenere
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Barry
XT600Z 3AJ Tenere (rebuild in progress)
SRX600
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