I have a couple of different PiD temp controllers but my favorite is this one. You can get it for around $230 China direct and the Omron PiD and solid state relay are much better than the $100 Chinese crap. Temp barely budges when I dab and it heats up fast! http://www.greenlightvapes.com/productsdetail.asp?id=4 And this is my backup travel enail. It works well too but heat up is about 30 seconds slower than the Omron. But it does come inside a Pelican case which is the tits! Does anyone have a really nice hybrid enail (Dnail Halo or Liger) and the VB2/VB2.5? I would love to hear a comparison and whether it's worth having both in the lineup!