Currently I am using the ReliaMed Sting-free Protective Barrier Wipes. They truly do not sting and seem to be doing a pretty good job. They don't leave a sticky residue after they dry like others that I have used, and that could be a good or bad thing depending on what your preference is. If you need the extra stickiness to help secure your baseplate, this may not give you what you need.
Medline Sureprep Protective Wipe was what I used previous to the above and they did a better job of protecting my skin, but they did sting a bit and somedays it was really bad. They do leave a sticky residue after they dry. These wipes did a better job for me in protecting my skin, but I never knew if it was going to sting bad or not.
I do like using the barrier wipes. I think they really help to prevent my skin from reacting to the adhesive. I am allergic to several adhesives in Band-Aids and surgical tape, but with the barrier wipes and the Coloplast bags, I am doing okay.