Anything built by Arsenal. I prefer the sheet metal receiver as it is lighter than the milled models. I like the polymer stocks over wood for functionality. That being said, I have several with wood furniture because I like the way it looks. I have a number of AK's but the two that get the most use are sheet metal receivers with polymer stocks. Both are Arsenal's and both have about 15K through each of them. They are a very reliable battle rifle and if that's what you are looking for, go with an Arsenal.