I purchased two drop spindles from a shop on Etsy and they arrived yesterday. One was a top-whorl and one was a bottom-whorl spindle. They came with a bit of yarn with which to get started.
I spun and plied half of the included yarn on the bottom-whorl spindle, and half on the top-whorl spindle. Combined, I made a 19 yard skein of yarn.
I like spinning with the spindles more than I thought I would, but I haven't decided yet if I like one type (top or bottom) better than the other.
As of this moment, I still like spinning with a wheel best.