Both are better than the Federal of the same type, which is out of production but still turns up at Ammoman and gun shows. Cor-Bon used to make one too, and it was hot as hell...1,000fps from a snubby and was known for severe barrel leading.
Buffalo Bore has the same recipe as the old Cor-Bon but with a gas check (basically a copper base-plate heat shield) to reduce the leading. The BuffBore is without doubt the finest round of this type ever made, but it's pricy and (in my opinion) only for use in relatively strong 38Spls guns and of course any 357Magnum.
The Remmie and Winchester variants are a great way to keep an older gun in service. While rated "+P" they're not going to be very hard on the gun. I would shoot small amounts of these in, say, an older Colt Detective Special or old S&W M&P that was in otherwise good condition as per "the checkout" (see stickied thread this forum). I shoot mild amounts of them in my late '70s Charter Arms Undercover 38, another gun not normally known for being able to take a lot of +P.
I would NOT shoot Buffalo Bore or Cor-Bon 38+P of any type through my old Charter.