I'm a Fan of Do-its Finesse Worms, they're 5/16" diameter and Slick, tapered on 1 end...I would like one in a 5"...a 4", 4.5", and 6" are currently offered. That 4.5" sends me text messages throughout the day.
For a slimmer 5" Stick that's cut a little closer to the GY's, BT has a 5" Thin Stick that I could stand to own. That Stick is Round throughout.
Bear has a 5" Slick Willy, they're similar to the Finesse Worms from Do-it, but with their own nice attributes...they taper like the Do-it Carrots and Finesse Worms.
I really have all I need with the Do-it 6" Finesse Worm. I shoot them in Soft and Super Soft, and I fish them a lot of ways. In the Name of Security, I'd better Advocate, er, Shed Light On, the El Gusanos (or is it El Gusanoes, plural?). I just prefer mine Simple and Slippery so I lean on the Multi-Species-Blastin' Finesse Worms.
You might benefit from a Sample Pack.