I'm on Pharmacom TestPH now, very good imo. My mid cycle bloods showed testosterone was at least 5 times higher than my pre-cycle levels, and probably more. I chose the wrong lab test and only got a ">1500" value on the report instead of an actual hard number. My Pre-cycle level was in the low 300's.
Glutes and quads for me. The first two injections at each location had a good deal of PIP. After the first two I've gotten absolutely zero PIP. The actual poke of the needle in the quads is a little bit painful, but only while I'm poking it into the muscle. Once I stop poking and start pushing in the oil there is zero pain.
I haven't tried the delts, and probably won't with this cycle since I'm down to the last 3 weeks. I don't massage the area either. I tried that at first, and that seemed to give me more PIP.