Gbn sells brands other than kalpa dude.
Have you tried different injection sites? Quads kill me but delts are fine. After you draw the gear hold the syringe under hot running water before injecting. That also helps

Yes, You really can not go wrong with GBN.
James, I tried different spots and have also heated up my oils. I guess it's just my bodies reaction to this gear. It suck because I like the prices of kalpa.

I tend to use quads and rotate them . i have never tried delts, i figure they would hurt more being its a smaller muscle