Yes it is. Especially if you ever go into casting the big bullets used in long range shooting. The built in PID is very good at keeping the temperature even from when you start at the top of the pot until you get that last ladle full from the bottom when ladle casting the big stuff, and the adjustable flow rate for the bottom pour makes for good fill out and even weights when casting the smaller stuff like pistol bullets and round balls.
For most small bottom pour projects like round balls etc, the lee 10 lb production pot works just fine.
I had a lee 20 lb pot with the bottom pour, until one day the pour spout fell out, and let a nearly full pot run out..