Jennifer Lowery wrote: Would it be better for me to just buy that or would it be better for me to collect the local seed? i.e. since this strain has had time to evolve to this particular environment?
I think you nailed it Jennifer! The variety you have already growing in your lawn is adapted to your particular environment, and the name for these locally adapted varieties is
landrace. That
landrace clover in your lawn has survived and thrived and saving this seed to sow elsewhere on your property will yield good results.