A lot of factors to consider like size, numbers and species. If you had to pick the state that offered the best fishing for all three major species of bass, I would go with Alabama. Wheeler, Wilson and Pickwick for smallies, Guntersville, Eufaula, Pickwick for largemouths and then a lot of spotted bass waters. All the Coosa lakes-Weiss, Lay, Logan Martin, Mitchell and Jordan. Wilson has the second biggest smallmouth on record and Smith had the spotted bass record for years until Alabama spots were moved to California.
If you just did it by species: Texas and Florida for largemouths, Bama and California for spots and I don't know for smallies-Lake Erie area?