Depends on your usage, tolerance and wishes. The devices that I usually recommend to beginners are Xmax v3 pro, airvape legacy pro, xvape Cheeh & Chong's Mambo, mighty/crafty, TM2 or desktop ball vape if you have high tolerance. All of these (except ball vapes) are electric portable vapes, but you have butane based vapes available too like the dynavap and anvil, but it's not my field XD.
Check our !vaporents@lemmy.beyondcombustion.net (currently offline) and !vaporents@lemmy.world. also fuckcombustion.com is an awesome forum about this field.
FuckCombustion: a forum about cannabis vaporization.