If your engine is not heavily modified, the stock manifolds are reliable and flow ok. I'm running Headman's now but on my next rebuild, I'm going with the Doug Thorley tri Y's. The Headmans are an ok value as are the Edelbrocks for a few more bucks. The Doug Thorleys are the cadillacs but the Headmans are in the price range you described. There have been some sealing issues with the Headman's but you get what you pay for.