If on a 500.00 max budget, the Rock and Tisas are hard to beat. I have 3 Rocks (Armscor) (had 5), a Tisas, Norinco, 2 Colts, Cimarron (Armscor) Springfield, CZ 1911, DW Valor. All are .45acp. My Rocks are 2 full size basic G.I, types and a compact. The 3 are reliable and accurate for defensive use. One of the two full size is crazy accurate. I actually like the Tisas better only because of the finish. It too is a very solid pistol. With the Rocks you get a lifetime warranty and their customer service is usually excellent. I purchased the Tisas from Bud's and purchased their lifetime warranty for an extra 20.00. Have never needed the warranty but I have seen a couple of folks in forums who used their Bud's warranty. It was every bit as good as the RIA warranty. I was glad to see that. I would not hesitate on purchasing the RIA or Tisas. The Rock offers more options. The Tisas comes in both 80/70 series style. I've read good things on the 1911 manufactured by S.A.M. but I have no experience with them.