I pinned my delt yesterday afternoon with a 1", went almost all the way in. I can handle this kind of PIP, it's not really too bad. It's the first time I've pinned my delt, so "virgin muscle" considered, I'm very happy with how it's feeling right now.
My quad, on the other hand, has made me miserable. I've been damn near immobile for 10 days now, from my right quad, and now my left quad. Actually had to call into work this morning, my job is 100% standing and walking. I was limping it out, but last night it was worse, and this morning I knew I wasn't going to make it.
I took some Benadryl this morning, along with some Ibuprofen, and it's helped a noticeable amount. It's helped more than when I have taken Ibuprofen alone for it. But, it could all just be coincidence.
I've also read a lot of people just can't do quad shots. Whether it's their (and my) technique, the gear, or what, some people say they just can not handle quad shots, it cripples them. I dunno what it is, but I doubt I will ever attempt a quad shot again if I live through this.