<human>: Can you succinctly summarize the text in 1-3 sentences?

This past summer I went running with a cotton —yes, cotton— t-shirt as a base layer. I was just getting back into running after a 2-year hiatus. I was also on a budget, so I didn't want to spend money on anything other than a pair of running shoes. 
Obviously, my cotton shirts would get drenched. The weather's changing and a soaked shirt on my back with a bitter gusting wind is uncomfortable to say the least.
So, what kind of shirt do I need? I know it's one of those under armor shirts, but are there other, more economical options? Is there a particular brand I should look for (or stay away from)? I recently got a pair of Russell Dri-power 360 shorts. I spent $5 extra for the "dri-power" shorts with the assumption that they'd stay dry, but of course, they were drenched after my run.
<bot>: what kind of non-cotton base layer shirt should I buy to stay dry while running? What brands are best?