I've had mine for 10 years now, so I'm very comfortable with it. I did a lot of searching and asked quite a few companies for samples. First, do a search on YouTube. I was surprised by all the info on supplies and problems. Even after 10 years, I learned a few new things! I use a one-piece Coloplast Sensura Mio most of the time, and I use a Brava moldable seal with it. My stoma has gotten smaller the last few years, so I switched to a light convex, but you probably don't need that. I've found that the Brava moldable seal makes things last much longer, and seals like glue! Here's what I do: First, if I have any areas that are irritated, I take a little hydrocortisone cream (cream NOT ointment) and rub it in well until it's dry. Then I use protective barrier wipes. If you have insurance, these are very inexpensive, like 2 for a box of 30 or 50. Wipe all around the area that will have the barrier, then let dry completely. It only takes about a minute. All the videos and all the info tells you to put the seal on then the barrier. No matter what I did, that way leaked half the time. I do it this way: Cut your barrier to the size of your stoma, with just about a hair's width wider. Use a hairdryer on medium and warm up the seal for about 30 seconds, makes it very pliable and sticks quicker. Then place the seal on the barrier with the seal opening slightly smaller than the barrier. This way you can have it very close to the stoma, touching it and sealing all skin without a chance of irritating the stoma. I use the seal covers, the thin pieces that keep the seal fresh, put them over the seal, both of them so it's all covered, and use the top of a small spray can to press them together FIRMLY. Then I take off the thin seal covers and place them around my stoma and put pressure for a minute and I'm good to go. I'm very active, running and training dogs, so I perspire easily and am twisting all over, and this holds tight. The other brand I like is Cymed. Their barrier is as thin as cellophane, and when on, you can hardly feel it, and I never have leak issues, as they have a seal built-in. They are more time-consuming to empty, just because the opening is smaller than Coloplast. I hope I explained clearly enough, but don't hesitate to ask questions.