Re: Which is worth more?
Assuming condition is the exact same condition (wear on the interior, tires, paint etc) I'd go with a 93. Partly because that's the only year of SyTy I haven't owned, but also because it doesn't have those stupid echelons around the door handles. I'm not really a fan of the fat man seats though, so those would probably be swapped out for some Recaros or similar.
That being said, I wouldn't let the year deter me from buying a truck. The model year would be dead last on my priority list.