I found the first round of inkectins (week 1) where i hit every muscle group with ED shots, did hurt. But my second round didn't hurt at all. and now (week 4) i don't even feel them. It's water based, so in theory it has a tendancy to cause some pain. I also think what company you get it from is a big deal. I use test prop right now from a new guy on the block that is basically pain free. Been able to do 800mg a week of it and be ok running still of all things.
However, to get back to your question, stay away from the pills if you can. More liver toxicity. Just suck it up and realize in 6 weeks it'll be worth it