Like anything, it comes down to task/purpose and budget.
My last couple rifles wear Bartlein's that my smith installed. I bought the barrel blanks from "Bug Holes" in calibers and contours I wanted and he chambered, installed and crowned. Cost was about:
$450 for barrel blank (you can find sales, but odds are not in the contour you're looking for)
Bartlein Barrels, As a team we pride ourselves on our quality of work and products. We strive to be the best in the firearms industry and a world class manufacturer. We have taken Single Point Cut Rifling into the 21st Century. The uniformity in our barrels and finish of the bores is second to...
www.bugholes.com
I use Jeff Hayes at River's Bend Gunshop, he's a former GA Precision guy, and just a fantastic smith to work with, and all around great guy. Talk to your smith about your expectations, accuracy, budget weight, balance etc. BEFORE buying stuff!
Builder of custom rifles for long range hunting, target shooting, and competition
www.riversbendguncompany.com
My last rifle was finished this past fall and prices appear to be the same:
Thread and chamber: $225
Blue Print a Rem 700: $145
So just for a basic rebarrel with a top tier barrel will be around $700 or so without refinishing.
Another solution (this is where knowing your Task/Purpose comes in) is going with one of the one stop shop companies like PacNor, McGowan etc. that will rebarrel your rifle with one of their barrels usually a little cheaper than going a full custom route with a top tier barrel.
I'd avoid going with anything take off because there's probably a good reason why it's no longer on the original rifle.
At normal hunting distances no game animal on this planet will know the difference between getting hit by a bullet from a PacNor VS a Bartlein, and you'll save at least a little money.
I've got 1 Rem M7 with a PacNor 3 groove that's far, far better than the OEM Rem barrel it came with, sub MOA with just about every bullet I put through it, just doesn't shoot as small as a Bartlein, and takes a little more load development to get there.
A PacNor barrel is about $340 and installation is about $300