They are both good, but IMO and lots of others, there is considerably better...You dont see to many shilens and Pac nors winning anything type of LR events anyways...
Krieger, Lilja, HART, Mick Rock 5R, Schneider, Lothar Walther, etc..These are barrels that have a track record lately for winning LR events. Well worth the bit of extra money...
My last 25-06 on a 700 wore a shilen light varmint and it was a 1/2 MOA shooter with several loads consistently. Good barrel. Cleaned up nice and was accurate, I was happy with it.
Only other rifle I own with a custom barrel is my 338 EDGE on a rem 700 and it wears a 28" HART Stainless/fluted sendero contour. It also is a 1/2 MOA shooter and cleans up real nice.
My next rebarrel is either my stevens 243 or my rem 700 in 7 RM. I will be trying either a Krieger or Mike Rock 5R on them this time around.