Your dose will be fine. As for a choice, it is personal. Enan above you and most guys here love the Jins and swear by them. I tried them and go nothing but flu like symptoms, lethargic and massive water retention. On soma I get a sense of well being and better fat loss. Some guys don't have any problems with the Jins, but some do. Some guys don't like the somas and have problems with them, I didn't.
So I know that doesn't really help but I can tell you this: I have been using Somatorm for 4 years now, and I have switched all my pro's from Jin to Soma and they won't go back to Jins.