The best juice name i ever heard of was one called “your mom”. I actually kept the bottles for thier labels.  Too much aspertame is a long standing bugbear.  I avoid such by doing DIY.  Then I decide how sweet it should be.  Mostly its about it costing 1/10th as much, but sweetness is controllable that way.  People find straight VG to be very slightly sweet.  It may be enough.  Unflavored has a flavor.  Just not much of one.  There are advantages to unflavored.  Your cotton lasts multiple times longer for one.