Need help with HFO options to play with.

So I have been playing with prostate/anal play for past few months. Some has been solo and just breathing with contractions and feeling things using prostate massagers that vibrate etc (sometimes on sometimes off) as well as curved glass or plugs. Waves of sensations felt and pleasure but no HFO, Super O or anything close.
I can’t find any aneros products at my local stores and can only order online but expensive when I can’t see the size and shapes as well as depths they go. So I am timid about buying the wrong aneros online.
I am not a size queen, but also don’t want anything too small. I like a bit of depth and find that’s where better sensations are. I also feel I don’t want the syn models as the syn toys don’t feel as good to me as smooth toys. I also really need something that doesn’t bulb out too much around the hole area because I am not fond of the feeling of the pressure if it felt like pulling out and putting pressure on Anus from the inside.

Anyone have any thoughts or suggestions? One of the local shops here in Canada had a mega sale on and I was able to get an aneros knock off so I ordered that to try as I don’t have anything like it but truly feel I will need the real deal to get where I wanna go.

Thanks