Re: Reusing a factory Rem 700 recoil lug?
If you have it far enough apart to make the question logical, it pays to spend the few additional bucks for a better part. Factory parts are the most cost-effective (read: cheapest) parts capable of doing the specific job, so once you've got yourself in a position to replace one, it almost always works better to make the additional investment.
IMHO, the most labor-intensive part is the barrel, so that's where I'd be putting my primary investment, because where the labor is, the cost cutting gets most intensely applied on factory products.
Greg