For me, my biggest challenge at first was getting anything that would seal for more than 2 hours. I called both Hollister and Convatec several times and talked with there ostomy nurses. Both companies sent me two each of about every thing they had.
After much trial and error I found the Convatec products worked the best for me. The Eakin seal was a life saver. I tried all kinds of one piece and two piece arrangments.
For me I liked the two piece finally settling on the bigger drainable pouch. This pouch worked well at night, not for waste, because I would not eat before going to bed. The problem was gas the bigger bag worked better. I found the filters not to work well after a few hours, I would change out just the filter, still had problems. I ended up using the Osto Vent which is a manuel vent I would locate at the top of the bag.
One more thing that made a big difference for me. Using the two piece system meant I could place the wafer exactly where it had to go, because I could see the stoma when placing the wafer. Then I would just clip the bag on. I did use the Hollister belt. The Convatec bags had little ears on them so a person could use a generic belt.
When you get it right. By that I mean the correct site preperation, the right adhesive for your skin and the wafer has to be off the right material for your intestinal enzimes, the hole the right size for your stoma you will have few to no blow outs or leaks and you will not get the burning or irritation around the stoma. It took me months of trying different things out.
I didn't really notice much difference in one sytem showing thru more than another.
My stoma was right at my belt line, I had to wear my pants at the waist somewhat loose, for me it made no difference. I can see for a lady it could make a difference.
Good luck.
Rick.....