I know some of you probably get tired of m e repeating myself, but chek out the forums at vaporinfo.com for some quality information on all kinds of vapes. definitley don't spend less than 150, as it seems all the vapes in this range are pieces of crap. digital temp control is nice, and a feature I personally have stuck to... gives you great control as to what you're getting (thc, cbn, cbd, etc.). i've stayed in the range of $200 - $350. beware of plastic vapes with fans, as these break easily with heavy use. if you want a bag system... it seems the volcano would be the best choice, despite the price. something i've learned is it pays to buy the higher quality one once than to buy a crappy one and have it break down on you, thus turning your cash into trash.