9.7"/10.3" too small for PDFs?

I'm torn between getting an older MAX CARTA or getting the new Note, since both can be obtained for the same price.

My intended use is simply reading PDFs and nothing else. My worry is that the 10.3" screen just isn't big enough for frustration free PDF reading.

Could anyone who reads PDFs on a 9.7"/10.3" screen comment on the experience? Has anyone tried both?