what tanks are there???
 

Hi I have an 88 xt600 with the small 11-13L tank and am researching what is in the market for larger plastic tanks.

Most of my riding is general commuting and weekend trail riding. and i only get to do a couple of long rides a year. essentially i think i only need 17-25L max.

I would really like a plastic tank over the metal tank due to rust and dint potential, plus generally plastic tanks are more durable.

So whats out there, and what are they worth? (please include links or pics)

I think that Acerbis still make the 20 litre plastic tank for that model. You are looking at 200 quid. Touratech or Bert Harkins (?) should be able to sell you one.
Matt