oh, your post didn't mention the possibility of buying a 450. Overall I would think buying anything prior to an 08 is now a risky venture, unless of course if your Canadian, then there is no problem. Aside from the higher purchase price, you are dealing with a very select number of places to get parts/service. I assume that smart dealers here wouldn't touch these cars with a 10 foot pole. Remember that the 450's are CDI and have only around 40 hp. I wouldnt be happy with that, but to each their own.
I would get a new model and wait and see what happens with the aftermarket.