I decided to start with something small.
The bullet shape was a great help in getting it in my anus. From a lying down position it works quite well.
I wouldn't however recommend it for a seated position, it kinda gets lost in there.
The medium was a little bigger than I expected. Once inserted felt great.
I got the smallest size magnum since I was worried the larger sizes might hurt going in. It is very easy to insert, and the electrode arrangement front and back instead of side by side like other plugs is superior. However the insulated portion diameter is only somewhat smaller than the head diameter, so keeping it inserted during contractions can be a problem for me. On another guy I tried it on it was not a problem at all so it depends on your anatomy. For that reason I'd recommend going with at least the medium size if you can take it.
This is fun to use. I think I will need a more powerful box to really enjoy it though.
The shape of this really makes it easier to insert and remove. I purchased the
Large. I have reached my anal limit with this one! Wow! I have pes and fulsom
Plugs. The quality of estim plugs are the best.