I'm currently on 800mg/wk using a test400 blend, up from the 500/wk I started this cycle on. Personally, I don't really feel that great at 800mg/wk, and I haven't noticed any additional gains other than more zits/headaches. I'm going to start pushing the pinning further apart until I feel better. Also, I don't think it's a hard and fast rule on the test/eq ratio. If it's your sex drive you're worried about, you can bump the test up, or add proviron later on if it really becomes an issue, but I doubt it will at 600t. Also, if you're committed to trt, which is typically for life, why bother with PCT?