I actually had the opposite experience. As long as I can remember I had been on Creon 20 but when I started to get horrible stomach aches I switched to Ultrase. Things improved after the switch, I just figured because less was going directly into the toilet. I'm still trying to get my hands on more ADEK, they made things a lot easier and made me not cough up blood when I exercised.
On a side note to welshwitch: There might actually be more "stuff" in them. On a refill for Ultrase once. they sent me smaller pills. I just thought maybe they had changed and didn't think too much of it, until I started getting horrible stomach aches again. They had mailed me the wrong dosage and to equal the dose I was taking before I would have had to swallow like 40 of them. They had sent me just regular base minimum Ultrase instead of the Ultrase MT 20's I was used to taking. Got that problem solved real quick.
On a side note to welshwitch: There might actually be more "stuff" in them. On a refill for Ultrase once. they sent me smaller pills. I just thought maybe they had changed and didn't think too much of it, until I started getting horrible stomach aches again. They had mailed me the wrong dosage and to equal the dose I was taking before I would have had to swallow like 40 of them. They had sent me just regular base minimum Ultrase instead of the Ultrase MT 20's I was used to taking. Got that problem solved real quick.