Best PDF Reader for older iPads

Most developers build the new App, and pull the old App leaving users of older iPads with no options. But I appreciated PDF Pro for serving all iOS users.
PDF Pro is neat and well designed. It is an excellent App!
What I like best are the many ways to connect you ipad in order to transfer files. It is very slick using wifi.
Overall, I give it top marks.
J

Rev Mills about PDF Pro - Reader Editor Forms, v2.4.1