Great choice guys, i've owned my dbv for about 6 weeks and I frickin' love it! I would suggest though Compgeek that maybe when your wife vapes to lower the temp. This way she can draw slowly and lightly which is fine but will heat the herbs that much quicker. I'd say let her draw at about 1 o'clock and you maybe about 2-2:30 but not past 3 (settings vary on each vape).