I'm buying way too many damn comics but Marvel's Complete Collections are too damn tempting. They're smaller than an omnibus with usually just less than 20 issues each, but they're generally in the $20-$30 range and aren't awkward as **** to try to read without laying them flat on a table. Unfortunately to bring down the price they're pretty bare bones and aren't made with as much quality as an omnibus, but nearly 20 issues of comics for $25 is hard to argue with.
I've already acquired vol. 1 of both Superior Spider-Man and Doom Patrol, and now I have vol 1 of Annihilation coming. It's basically the event that relaunched Marvel Cosmic as a thing that eventually led to the formation of Guardians of the Galaxy and what I've already read was pretty ****in' lit and I have little doubt that if it doesn't get directly adapted into the MCU then it will at least be a huge influence in the next couple of phases.