There are not many faults with a decent vee 1000, just make sure its been well looked after with a decent service history and if you don't want to live with standard there are some great upgrades that can improve the bike alot, just have a brouse through the threads to get some ideas.
+1 on the wee 650.... try to find a twin spark model, above 2007 I believe , real good on petrol and faster than they look..