You definitely want a flex joint in at least one end. Both ends is, of course, better. If your looking at solid bushings you are better off sticking with the stock arms. They are much stronger than they appear and have good flexibility. I ran them for several years on a 2.5" lift without any problems. The Johhny Joint is highly regarded but some do not like that it requires maintenance. There are several other manufacturers that use some variant of a bonded rubber flex joint. Many people have reported good experiences with these joints. Metalcloak and JKS are a couple brands that come to mind. Sadly good quality parts come with a price. You are not likely to find good arms at the price of the base Core4x4 arms. No matter what you decide on I would recommend waiting another month. There are usually some decent Black Friday sales that might make better arms more budget friendly. I've typically seen anywhere from 10% to 20% discounts, often with free shipping.