It can really depend on what you like to read, but I've got a reasonable list of authors that go to the top of my list in the indie space:
David Michael - a fairly dark fantasy/horror writer (I enjoyed
The Summoning Fire as by intro to his work)
Hugh Howey - needs very little in the way of advertising these days (
Wool - of course)
John A A Logan - for fantastic writing in a dark literary style (try
The Survival of Thomas Ford)
Thomas Brookside - with a really interesting take on histories retold (try
The Last Days of Jericho)
Glen Krisch - I enjoy his dark horror/thrillers (try
Where Darkness Dwells)
Simon Royle - for some fast moving thrillers (try
Bangkok Burn)
M H Mead - for some sci-fi cyber/tech thrillers that aren't too heavy but fun to read (try
Fate’s Mirror)
Nancy Fulda - for exquisitely written science fiction short stories
Michael R Hicks - has some great thrillers (try
Season of the Harvest if you like conspracy thrillers)
There's more - there's more.
Actually, there are some review sites that specialise in indie content. Many are linked to centrally at the Indie View:
http://www.theindieview.com/latest-i...round-the-web/