Anal Itch

I have been practicing about once every 10 days for about 3 months with the Helix but I haven't achieved a Super O. One day I discovered slowly thrusting the toy in and out provided pleasurable feelings. However, the feeling is similar to an itch that needs scratching. I can maintain this pleasurable itch but it is never satisfied. I've experimented with different angles and variable thrust speed but the only relief I can achieve is a wet penile orgasm. I even used my wife's vibrating tongue toy and the combination feels phenomenal. Is this what it is supposed to feel like approaching the Super O? Should I continue exploring this method and will it eventually lead to satisfaction? I just want to know if I am on the right track. 

Another question I have is whether or not to use the edging method or non-penile stimulation method. I once had a session where I prevented ejaculation about a dozen times. After about an hour and a half of edging my penis and testicles were no longer able to take it anymore and I had to ejaculate. During a non-penile stimulation session I was able to be aroused and had many pleasurable feelings but my penis went soft and never got hard again during the session.