Inexpensive I'd choose Burris FF-II 4.5-14X42 PA with the B-Plex. It's nutts on with 140Accubonds at 3100 fps.
For better glass that you can customise as you can afford I'd choose Leupold VX-III 4.5-14X40 A/O Used on Craigslist. Send it to the custom shop for Varmint Hunter reticle. It's also nutts on with 140Accubonds at 3100fps. You do not have to be the original purchaser of the scope. Warranty is forever, & custom shop upgrades are inexpensive. I've bought many of them, & gone this route for economic reasons.
2 of the 3 270WSM's I load for, wear one or the other of the above mentioned.
For the limited range of only 5-600yds there's no point in dialing yardage. Although with the Leupy, you can have turrets installed later if you wanna reach out there a ways.