The Wylde is pretty much the standard for accurate .223 gasgun chambers. If you want a accurate barrel, there aren't a whole lotta other choices.
You can get button rifled barrels from about $210 to cut rifled barrels like Krieger at about $500. It's up to you, most of them shoot pretty well. I'd get a 7 or 8 twist to shoot both heavy & light bullets.
