My recommendations are from the fantasy/sf side of things. The Star Force series by BV Larson is a favorite of mine (I think the whole series is available on Kindle Unlimited), and anything by either Vaughn Heppner or David Dalglish are must-reads for me. David VanDyke's Plague Wars series is also fun.
Joseph Robert Lewis is also really good, his stuff falls along the lines of steampunk-ish fantasy. His heroes are also mainly female and of various ethnicities which gives a fresh feel to the stories.
http://www.josephrobertlewis.com/