To start with, what is an automatic masturbator? It's a male masturbator with a vibration element - because why let the women have all the fun? There are more and more automatic masturbators on the market - which type is right for you?
It depends on personal preferences.
Automatic masturbators tend to fall into two broad categories. The first are essentially automatic fleshlights - sleeve masturbators that vibrate and may be designed to resemble a vagina or a male or female ass, or in some cases both. These masturbators are used in a similar way to typical sleeve masturbators, but provide a more intense level of stimulation. The real question is whether you want a straight up sleeve or a toy that's designed to resemble a person.
The other category of automatic masturbators are "oral" masturbators, which are designed to either stimulate tongue action or to mimic a blow job - they generally resemble a mouth. A lot of men like oral sex - and not everyone likes giving it, so "blow job" masturbators can sometimes be a popular toy for couples.
Past that, the devil is in the details. Automatic masturbators, like vibrators, come with different speed and pattern selections, and it's a matter of finding the right one for you. Some open-sided masturbators can also be adjusted for the ladies - which means they're great for couples play. Some masturbators also come with a remote control - the Lovense can even be controlled by a phone app from the other side of the world, awesome for people in long distance relationships. Automatic masturbators tend not to have as many different settings as vibrators, but do often come with multiple speeds. They also come with some size variation - just like you do. Some come with interchangeable sleeves of different sizes.
When selecting an automatic masturbator consider whether you will be using it for solo or couples play. It's a good idea to measure your girth and check reviews to make sure the toy you choose will be a good fit. (Don't worry, if you're smaller than average, nobody has to know). Stroker vibrators tend to be cheaper and easier to transport than traditional sleeves, which might be a concern if you travel a lot.
Many men find they get extremely powerful orgasms from the use of automatic masturbators. And if you enjoy couples play, you can pair them with a vibrator for a bit of quid pro quo action! There are plenty of choices - so do your research, think about the kind of play you like, and get to it.