I think the SRT's will go up in value because of rarity and performance. I bought my 04 Ltd with 27K on the odo. for $11,900 over two years ago. I'm retired and don't drive it much, less than 1k a year. I'm thinking I could sell it for what I paid for it after 10 years of ownership, if I kept it in excellent condition.

Just for an extreme comparison, I sold my 64 Vette convertible for $1500 in 1971, when it was just another used car. I wish I had kept it for 40 more years!