That's just going to come down to the individual 100%. I literally never combust with the Milaana and rarely even get hot spots these days. I don't even think about my technique anymore it's pretty much become second nature to get a perfect tasty huge hit every time. Also I haven't used the newest version, but apparently RBT has made some changes that make it much easier to get consistant results for beginners. I definitely wouldn't call the Milaana semi portable because of the heat factor, I think most people will find the vapor plenty cool enough to enjoy. I would call it semi portable though because of the removable glass stem and glass components on the vape itself. I rarely if ever take it anywhere because I'm scared I will break it or the stem will come loose in my pocket. The grasshopper is one of the only good AND truly portable vapes I think I've ever come across, however I do see why some people would say it's too hot native.