FWIW I'll add an endorsement for the Grizzly. Any Grizzly.....The rack and pinion feature alone is worth it and since I carry a couple 25lb bags of shot in my rollaround the base weight isn't an issue, for me. I useta' make bases for every rest, great herkin' 50lbers and have to load about 6 of them, now I just adapt everything to the bags of shot.
Clean wet bench, some superfeets, some old pingypongy paddle rubber (the real stuff, like SpinSpiel/Joola/Stiga) and me' shotbags...... ya's cain't shift me' front with a bat