Keep this head or start over?
 

The head on my car seems to have never ending problems. Just pulled my engine and transmission today to do some inspections and here's what I found. Haven't checked the intake side yet because I lost motivation, but the entire exhaust side looks identical to this. I think I'm going to pull this head and install the head from my stock engine since I know that it wasn't put together by someone who should be putting together Happy Meals. I know it's not a big thing to fix, but just seeing all these problems arise makes me want go with something that I have confidence in. What would you do?