There’s so much awesome SF out there... it depends what you like! Personally, in very different styles, I found pretty much everything written by Iain M Banks

There’s so much awesome SF out there... it depends what you like! Personally, in very different styles, I found pretty much everything written by Iain M Banks excellent (start with Excession or Player of Games), I enjoy John Scalzi’s humourous sci fi space operas a fair bit too, Peter F Hamilton’s Reality Dysfunction trilogy was pretty decent... I’ve loved most of what I’ve read from Charles Stross but particularly Accelerando, Greg Egan’s Diaspora was awesome, like a modern day Childhood’s End (read that too if you haven’t, though it’s aged badly). Cloud Atlas is sorta science fiction and amazing. I’ve yet to not enjoy any book by Cory Doctorow - start with Pirate Cinema. The Windup Girl by Paolo Bacigalupi was excellent. This should be enough to get you started!