Ya me to. It works well. Mediums work well for mya vortexs, although i got a large to fit in my vortex by flipping the rubber piece inside out and pushing the diffuser on around the rubber part instead of hooking into it. It has never in over 1 year of use and prolly close to 1000 hours of use has the heba diffuser EVER fallen off the way I put it on. Pictures are available for those who request them.