This anal trainer kit is reasonably priced for a good quality set. I searched through almost every other trainer kit here on Amazon, read hundreds of reviews, product questions, etc before deciding on this particular one. I would call myself a beginner, almost graduated to intermediate level, anal play enthusiast. But this kit would be best suited for beginners and intermediate users such as myself. For the advanced user? Maybe if they haven't played in a while and need to ease back into things...See what I did there? ?These plugs are pretty small compared to a lot of other plugs I have seen. The first one is about the diameter of my pinky flaring out to the widest part which is still fairly small. Personally I bypassed that one and went straight for the second smallest. The next size up is a little larger than the second one but not drastically. The biggest one..Well it's pretty big but not in a scary way. I am slowly working my way towards that one.I've done my fair share of research since I have found my new enthusiasm for anal. One thing that is very important for beginners to know is that you need to go slow. You need to prepare your butt as much as possible for the big event. And as always, use lots of lube. Because even if you feel you are ready for action your butt may not be resulting in tearing or a potentially painful experience. That's where these trainer kits come in. Fantastic idea! You can gradually work your way up and have a little fun at the same time ;) Below I will list the reasons why I chose this kit.1. The size and shape. I like how the tip is significantly smaller at the top because it makes for easy insertion. It gradually increased the size until you get to the widest area then smaller until the base which I think allows the plug to stay in place through activity and various movements. The suction at the bottom is big enough to makes me feel secure in knowing that these plugs will not be going any further than intended. In result saving me an embarrassing trip to the ER.2. Material. I love this material! High quality silicone that is extremely easy to clean, safe for your body and so, so soft. Make sure to clean these before and after use. Very warm water and a mild antibacterial soap will be sufficient enough. Also, do not use silicone based lube on these as it can cause wear and tear to your plugs. I use a water based lube and while it may not stay slippery as long as silicone base products it is safer and as a bonus it doesn't make you or your sheets sticky afterwards.3. There are 4 plugs instead of 3. Some of the other kits on here only include 3 plugs and are the same price. I guess it depends on personal preference but for me I like having more of a variety in size. I also noticed that some of the complaints on the 3 peice kits were the transition from plug to plug. It basically went small, big, huge. And for a beginner that is not always ideal.So, with that being said, those were the main motivators for me in choosing this product. These plugs are comfortable for long term wear. Just make sure to add a little lube every now and then so things don't get "tight" in there. For the price, quantity and quality I feel confident in my purchase and I'm happy with the product.I recommend this trainer kit to anyone looking to start or advance into anal play with themselves or their partner. Male or female, come one come all ;) Try this kit, you won't be disappointed!