I saw there's was an old thread, but what are some newer mixing consoles that work well with Sonar? I have the Korg studio now but you have to jump through hoops to work with the busses. Is there any good digital boards that work well with busses for sonar?

I have bought an AVID Artist Mix for a week.
https://www.avid.com/DE/products/Artist-Mix
 
It works very well with SONAR and it has very very quit motorfaders. Even quieter than the VS700. And as flat as a keyboard. If you don't need a master fader or a transport section the AVID Artist Mix is perfect. At the moment I sell my Behringer X-Touch on eBay because the motorfaders are loud as a needle printer.
With the Artist Mix you can focus on the mix.
 
But the busses came also at the end of the tracks. But you can jump with one button to the last tracks (busses).

ChaosNone
I saw there's was an old thread, but what are some newer mixing consoles that work well with Sonar? I have the Korg studio now but you have to jump through hoops to work with the busses. Is there any good digital boards that work well with busses for sonar?

If you mean Korg Nanokontrol studio, you can make it controlling buses... Will cost no money but takes some time.
 
If you are ready to spend $500+ for X-Touch, $1000+ for AVID or Mackie MCU Pro, they are definitively better. In functionality and in quality. With all 4 units you get what you pay for (but watch out! not all units on the market have that property in respect to Sonar, f.e. 8 tracks Faderport and SSL Nucleus are not going to give you proportional to the price feedback in Sonar).