I have several favorite bulls. My heart says the best was JTJ Buckshot 7B, a relatively unknown bull here in OK that was put down at the age of 15. He sure sired some good sons and daughters, all natural service, never was collected.
My head says Feltons 517, PW Victor Boomer P606, several RHF Victors including 103T, Vindicator, MW LLL Farley 24F, VCR EAST Kodiak, Keynote 20X, and a number of others would have to be up there. Jim Reed told me that the best values for the money in his catalog were Vindicator and Energizer, siring good replacement females. A Maine-Anjou breeder who also did AI work said the best Hereford bull in his opinion was Boyd Heavy Hitter. He said he could drive through a pasture and point out the Heavy Hitter calves.
The Braxton Giant bull sure looks good, and Campground has had good success with those bloodlines. I'm thinking about trying some myself.