Progasm / Jr / Helix?

I’ve had the njoy pure want a couple of months now and like it. Did not achieve the super-O but gave me mini-Os and good feelings.
I can fit the small end without any issues any time also no lube necessary thanks to its smooth surface. The big end i cannot fit yet.
Anyways, I want to extend my collection with an Aneros. I’m thinking about getting an Progasm since I like the shape and the size, but maybe it would be too big for me? I think I could fit it because the shape of the tip is formed for easier entry compared with just the round ball of njoy.
Or should I go smaller first with the Helix? I’m afraid this won’t do much for me because i usually stick the njoy inside quite far for a good feeling.
Or choose the middle ground with the Progasm Jr.?
I’m not particularly tall with 5’10”.
Thanks guys!