CornCod,
In addition to my other posts on this topic I'll throw in a few other ideas. If you do want to go DA/SA new Rugers can be found almost anywhere for $300 or just a bit over, and S&W 2nd gen (59x, 69x), and 3rd gen (59xx, 69xx) autos from police trade in are all over the market at $300 give or take $25 for certain models. Most of the ones I saw before deploying were in very good mmechanical condition but had a fair amount of holster wear. I've fired several of the Smiths and Rugers but never bought one. They are truly working guns, plain jane, and boringly reliable. Alas, they are plain and bore me so my funds have gone toward other firearms that interested me more. Were I on a tight budget the abundance of S&W 3rd gen autos, cheap & available magazines, large replacement parts stocks, and the ease of finding a smith or armorer should one be needed, would have me looking their way. The same can be said of the Rugers, though the S&Ws are generally less bulky, and there are also lightweight alloy framed versions available which further add to their appeal. I'm sure others will think a few other options I've forgotten. Have fun with the search.