The Sunshine commercial cutting series is one of the best for long stems with lots of flowers. Compared to Spencers they can produce 5-6 or more flowers per stem.  These are also good varieties for growers in the South who need to get their flowering started early before summer heat arrives. Performs equally well in summer in cool climates.

Pink is prolific producer of long stems producing 5-6 clear medium pink flowers per stem when happy. (photo is of a similar variety to show color). 

Considered a "winter" variety, meaning it needs 10 or more hours of day light to flower.