So as much as i'd love to throw down $1000 or more on a sweet custom Kimber 1911, I just can't justify spending that much. But I'm very interested in getting a 1911. I was at Cabella's today and saw a very plain-jane 1911 for ~$550...don't remember the brand though. Are there any reasons not to go for one of these plainer, cheaper ones? What are the major differences/upgrades put into the more expensive custom ones like Kimber? Are they worth it? Can I buy parts and upgrade it myself for cheaper?