Attachment compatibility with Stihl power head
Hi, I'm planning to invest in a power head and several attachments. I'm leaning toward the Stihl KM 110 power head based on good reviews and the fact that the local dealer is close by and I like them. But some of the attachments are quite a bit less expensive from other vendors so for the ones I expect to use only a few times a year I thought I might go that way (for example, for the hedge trimmer attachment). I've seen some people describe using different attachments on different heads but do they work well or is it really kludgey?
Specifically, will Echo PAS, Poulan Pro, and/or Craftsman brand attachments usually fit a Stihl? Is there any significant downside to mixing and matching?