The evolution of recording equipment and recording software is totally amazing. The ability to fix audio problems has become astonishing. I recommend taking a close look at RX 6 Advanced iZotope RX 6 | Noise Reduction & Audio Repair Software and especially RX Post Production Suite 2 | iZotope Audio Post Production Software
The new coolest things are Loudness Control, De-Wind, Dialogue Isolate, Breath Control, MP3, and a much improved De-ClickExport. Those are my favorites but there's much more more.