Perfect! Thanks! 
Ever since Baja's echinopsis banner last year,
I've become enamored with these compact cacti that
put out such beautiful blooms.
They look very similar to echinopsis, but in general seem to
have longer spines, though yours is almost spine-less.
Less = better.
Not sure what separates the two genera (?)
Both can take colder temps, richer soil, & need more water
than desert cacti.
There's a special anticipation for me when I see them start
to bud. I've tried to do a time lapse, but haven't mastered it yet.
