I use slin pins and I think they work great for oil based shots. The needle is 5/8" and I am about 10% fat. Use it in bi's, tri's, delts, whatever.
25g x 1" is too deep and painful for me. Especially when doing them myself.
Only takes about 30 seconds or maybe 1 minute to do a full 1ml shot thru a slin pin so its not too bad. What the hell is the rush anyway? got the swat team banging down your front door? lol
now if u guys had prescriptions like the rest of us....