I'm please with my powered KRK Rocki 5's. They are affordable and accurate. If the mix is good on them then, for me, it tends to sound good on multiple systems. FWIW, I know a lot of folks mix with well with phones but I couldn't imagine doing that.
Well...in all my subjectivity.
After listening to about 4 different manufacturers I upgraded to Rocket 8's G2 about 2 years ago from 20+ year old JBL4410's.
I'd highly recommend the KRK line.
The day I got them I listened to my own CD as reference and all songs translated perfectly to the KRK's.
Personally, I've never felt it necessary to mix on headphones to determine a final mix for any reason.
That's my take on it.
Carry on....