What’s the perfect lube when using Aneros?

A few days I’ll be getting my Aneros Helix. I’m so excited!! 🙂
But from what I hear, Aneros sessions require lots of time. Now I’m not new to anal play. I’ve used a dildo before many times. I use Astroglide. Even though it does the job, it usually dries up quite quickly. So would like for you all to recommend me a lube that’s perfect for Aneros sessions.

Which is the best aneros product for me? Helix? Progasm? MGX?

I’m really hooked on buying an Aneros on Amazon. They seem so amazing! I’ve known what they were for a while now, but I used to think that all you do with them is insert them in your anus and leave it there. Haha. The shape didn’t really look pleasurable at all.
But last night I asked on Reddit on how to get an prostate orgasm hands free, and the Aneros was recommended and I was looking into them all of a sudden. I then started looking at videos on how men use them and man did it look amazing. It looks so hypnotizing. I’m straight, yet these videos of men using their massagers made me SO damn rock solid. The way they were leaking turned me on so much. How weird is that huh? I’m not even gay yet i was turned on by these videos.
Anyways, after looking at these videos, I really want to buy a prostate massage now but I’m not sure which one though. There’s so many models. Which is the perfect one for me? I’m 6″4 tall by the way.
I’m not new to anal masturbation. Two years ago I used a decent sized butt plug every now and then when I masturbated. Then a year ago or so I bought this good sized vibrating dildo that I have used a couple times. While I love the orgasm they give me, I have never been able to orgasm by using them alone. I think I need a massager for that.
So what’s the best massager to use to start my journey into a hands free prostate orgasm?