So I went to the gun show in Canby last weekend looking for a Springfield XD .40. I did a ton of research on it and was convinced that was what I was buying. However, when I got there I held the XD40 subcompact and loved the size and feel of it. On an impulse, I went ahead and bought the XD .40 SC. When I got home and read up on it, I learned the SC version of the .40 has a lot more "snap" to it. This being my first handgun, I think I would rather have the 9mm SC instead. Anyway, the .40 I bought is brand-new in box, never fired, never loaded, perfect condition. If I were to take it to a dealer for a trade, I'm assuming I couldn't just trade it straight-up for a 9mm in the exact same model. Would I get anywhere near the same value, or would it be better to just keep the .40? As you can probably tell from reading this I'm a complete newbie, so any information would be greatly appreciated. Thanks in advance.