Townhomes in Seffner seem to be a rather recent addition while Brandon has quite a few. Where to buy would depend on factors that are important to you such as proximity to work, or on site amenities or how near or far is shopping and restaurants. The property taxes in Brandon or Seffner should be the same since both are in unincorporated Hillsborough County. A difference in communities could be the presence of a CDD and that would impact your costs. I'm available to help you make that selection. Just email or call.