Looking for recommendations for new receiver

Hi all, 

Upgrading my current setup and wanted to see if there were any recommendations on where to start my research. 

I currently have a 3.1 set up (moved to NYC a few years ago and apartment doesn't accommodate having my rears - so actually using them in a bedroom instead)

 I currently use a Yamaha RX - V573 purchased in 2012 new when I had no money. This has worked great for me as I use my system dual purpose to be both the 3.1 audio for my TV system but also run my phono through the receiver as it has a direct bypass for the analog audio signal that is coming from a separate pre-amp that I play for Hi-Fi sound on just the two floor standing speakers. All speakers are Klipsch Reference Series (42 models) 

Looking for something that hits some of the specs below

- Supports 4k video (ideally would support 8k so I don't have to upgrade again in future, but only have 4k now) 

- 5.1 minimum support (I don't know when but hopefully will move to bigger spot where I can reinstate my full surround system or expand to 7.1) 

- supports hi-fi analog signals - Would be open to a unit with built in pre-amp, but would like to keep the ability to play everything analog straight through to the speakers

I'd like to keep this below $1,000 given my space limitations on driving full immersive sound experience, but ideally would be a great receiver that has room to grow with me for a few years. 

Thanks for all the help and happy to answer other questions to the degree they help.