I saw the Leica ER5 on sale at eurooptic but most models were out of stock.
I can easily recommend the Zeiss HD5 also on closeout because the new V6 is out. Sale at Eurooptics, Sportoptics, and Cabela's.
The 3-15 is certainly adequate and the 4-20 gives you more room without completely robbing the low end.
To me it would matter what reticle is available and suits your shooting style/ability.
I have found the Zeiss Z600-800 or Varmint to be very usable with online ballistic programming. Some reticles have a thicker crosshair than I originally preferred, but in actual hunting/ killing use I have killed coyotes from 100-350 yds. 1 shot kills with 50 gr .22-250.
Rifle sight in was also suitable and accurate.
These 5x and 6x scopes are sure a pleasure after using 3x scopes for decades.