MK677 effects are barely noticeable on a cycle. It's pretty much the go-to for when you've already maximised the androgens and even then, it doesn't even come close to proper GH. Having tried both, the only reason I will ever use MK677 again is if I need to boost my apetite, but I've even managed to improve that by eating at the same time everyday and intelligent food choices. 25-30mg per day is quite a high dose, MK677 feels somewhat shit in my opinion because after a month you start to see the effects on your circadian rythm, as you sleep about 6 hours per night but it doesn't feel good, you're always on edge, you're hungry all the time and you worsen your insulin sensitivity. In the most non-condescending way possible, if you want strength and size gains, man up and take some testosterone with HCG. I started on sarms and being on injectables for over a year, I'm never going back.