Oh, yeah! I have found the smaller nuts have more flavor. But, being hard-shelled, it's a lot more work to get to that flavor. The real native pecans here in Texas bear nuts about the size of a marble and have a shell so hard you have to use a hammer to break it, but the meat is very tasty. One pf my trees have nuts that usually breakwhen they fall on a hard surface. The other has harder-shelled nuts -- not native, but more like native in that respect, but maybe twice the size of a native.
Unfortunately, pecan wood is very brittle, so it's not used much for furniture. The trees are messy because they drop long tassles (pollen-bearing) and tiny flowers in the spring, then immature nuts that stain my pool purple, then the nuts and cases that contained the nuts, then leaves. They are also self-pruning, dropping limbs a good part of the year. Not an ideal home landscape tree, but many of us love them and they are the state tree of Texas and a couple of other states.