OK, I have been away from airgunning for about 5 years. Yong Heng was the trusted budget compressor at that time, I have got one and it served me well before I sold it. Now I am back and based on the limited info I have seen, GX seems to be the popular choice now. I am looking at the GX CS3-I . I am filling airguns directly, no tanks. Have I missed anything ?