So the difference between actual HGH and peptides is this: one is the real thing and one simply causes your body to create more of your own. Peptides are a good alternative for someone looking for a solid bump in IGF without spending a fortune.
I will say that there is no 23 year old on the planet who isn’t competing that needs actual HGH for bodybuilding purposes. At your age you’ve got a ton of room to grow, so breaking out the biggest and most expensive cheat code is probably unnecessary. Additionally, at 23 you have zero need for the anti aging benefits. You already have those. They’re called “the endocrine system of a 23 year old male”.
Your best bet is Ipamorelin. It’s relatively inexpensive, can be taken orally, and if you hate the effects you can simply stop without any issue. I’ve tried mod GRF and it was meh. I didn’t sleep any better, my recovery was the same, and I gained about four pounds of pure water. I suppose if I had stuck with it for months and months I would have gotten the benefits, but 45 days was enough for me to make an assessment.
As far as what you can get out of any of them in regards to size or strength I’d say don’t get your hopes up. I don’t know that you’ll see gains in either directly. The benefits come from enhanced recovery—which all of the above will provide—but you’re not likely to blow up or hit huge new PRs because of it. If you want size and strength then you’d get more from testosterone than from HGH or peptides. GH is added when guys have exhausted pretty much everything else out there. Or if they have more money than brains. Unless you’re at an elite level it would be hard to justify using anything other than Ipamorelin right now.