T&D Sportsmans like the Jesel Sportsmans are entry level but have a few differences.
T&D Sportsman has a larger diameter axle and roller bearings in the trunion.
Both use a splash through the pushrod hole upper end oiling, meaning similar to factory the oil splashes out and drips down.
The Jesel Professionals all of them, still use this same oiling system.
The T&D Proffessionals have a pressure fed oiling through the pushrods in to the rocker arm, from rocker arms through the trunion bearings and out the tip oiling the roller tip and for less than $20.00 will include spring oilers too. I love them.
Ed