This is a tough question. Any particular genre?
x2 on Reacher novels (Lee Childs).
I'm also a big fan of Dan Brown (Inferno, Angels & Demons, Digital Fortress, etc...). I'm pretty sure I've read every book Dan has published and they were all very good.
I'm about half way through Total Recall, Arnold's biography, it's really good.
For lighter reading I like the Inheritance series by Christopher Paolini. They're geared towards a younger crowd, but Paolini tells a very compelling story. I read all 4 books in about a week and they're not short. You also can't go wrong with the Lord of the Rings set, but I would avoid anything by George RR Martin (Game of Thrones). Not because they're bad, but because they're long and tedious reads that I doubt will fit in your goal.
Not a big fan of historical books, but I did read Revolutionary Summer by Joseph Ellis in 2014 and enjoyed it very much.
P.S. I work for the Publishing company in our area and probably have 200 books I've yet to even touch. You're more than welcome to your pick of the lot. My wife wants to get rid of a lot of them anyway.