recommendations for low-quantity custom letterhead

we need to get some letterhead made. maybe matching envelopes. using a template is fine - don't need anything fancy. but do want something better than I what I can just make on my printer. higher quality paper...quality print for sure. we are starting to grow and need a better presence

would be 100 pieces tops. turnaround time is not a consideration. Price always is of course🥸. thanks in advance