I tend to agree with Butz; I've also used the same decals as he has with excellent results. Actually, the only decal sheets I've ever run into troubles with have been those which came with the kit, e.g. Revell or Monogram.
However, every time I get a sheet from an outfit I've not used before my tendency is to be a tad cautious. For example, the first decal I start with is one which can be replaced, such as a national insignia, and not one of a kind. Each after the market decal company seems to have different soaking times and ease of applying. Also, they respond differently to decal setting solutions. I'm very, very careful when applying Micro Sol to an unknown decal and thin it with a bit of water until I know how it is going to react.