How clean or dirty is your Quartz? I try to keep mine perfect.
As long as your temperature is low enough, and you q-tip (using two clean q-tips, both sides) your Quartz willl stay good indefinitely.
How do you keep your Quartz? How long does your typical banger last you?
I'd love to see pictures of your Quartz. If you have any questions on cleaning, post them up here as well!