Getting over the edge

Your description is very familiar. I have used the Helix for several months with a few sensations now and then. Sometimes the session ended with no results. Thinking back I realize I was trying to make something happen instead of letting something happen. I was getting in my own way and preventing progress. After reading some posts from experienced users I was able to focus on relaxation and breathing. In a few weeks I have made progress and couldn't be happier with the results. Here is something that could help. Plan a session in which the main goal is to relax and listen to your favorite music. Focus on the music and the way it makes you feel. Imagine the beat of the music in sync with your heartbeat. I hope this helps.

IMO you probably already are having prostate O's. There is no edge, but I can relate to what you are feeling. The more you relax and breath, the more you will just enjoy what you are feeling and not analyze the experience. You'll know you have arrived when the big one hit you unexpectedly.

Ive had sessions where my legs and ass lose control and even start to buzz. And ive had some sessions where i get this warm glow fill my upper torso. But most recently ive been getting what i can only think is a prostate orgasm building. It feels like i feel it in my cock, but my cock is completely flaccid and numb. But it is a burning hot and itchy sensation that is very similar to the peak just before regular ejaculation, but in this case way more intense. However, it builds and builds so strongly but just doesnt tip over the edge, there is no release or 'orgasm' like throbbing feeling. ...So is what im feeling similar to prostate orgasms you have all experienced?

Yup, you are experiencing a prostate based orgasm (a dry-O) which is qualitatively different from an ejaculatory orgasm. As I point out in my introductory PM to new members, orgasm and ejaculation are separate events. Most of us grow up equating the two due to their nearly simultaneous occurrence, so when one speaks of orgasm they immediately associate it with the ejaculatory feelings. Aneros use induces us to start thinking differently about this, a change in the thought paradigm about what constitutes orgasm. This paradigm change is essential to fully appreciate the prostate orgasm experience. Part of this change requires us to abandon some previously held myths/ideas about What's an Orgasm?. In this regard you might find it helpful to read the threads Super-O Myths & Illusions regarding 'the Edge' and a couple of other myths and @neros ' thread The Myth of Super Orgasm.

... how would you go about getting over that hump?

IMHO, as the above posters have noted, there's no "...hump..." to get over, it is a different experience with no PONR, it is more a gradual transition of sensations with different intensities. Quite often the sensations and intensity simply fades away after the orgasm peaks. Once you "Just Let Go !" of your expectations you'll be able to fully immerse yourself in the pleasure of prostate orgasms.
Good Vibes to You !