I've got a fifth option for you.......Swap Zed's with me!  
  
Here's 4 good reasons why............ 
  
1) You'd still get to drive a Zed!  (still oem sadly!)  
2) My 06 GT only has 41.5k on the clock so another years   mileage wont make much difference to the value!  
3) I only live 15mins from you (Cathcart!) so you could come and visit your old Zed whenever you wanted!  
4) You could relax safe in the knowledge that a fellow Forum member will look after your old Zed!  
  
....That is, as long as the value of your Zed with all it's Mod's is about the same as mine?!?  ie £12k ish! 
  
Please say yes!