Lorann's is meant to be a concentrated extract. Many of them are billed as 100% essential oils. So where you would use 1 oz of extract in a recipe, you would use 1/4 to 1/2 oz of their flavor oils. I'm also not sure if any of these are water soluble. If you're tinkering with a recipe like the OpenCola recipe, then these are probably what you are looking for. A number of them are natural flavorings, some are N&A, I'm not sure if there are any that are just artificial.
Rio's concentrates are meant to be a standardized concentrated syrup. So you know that 1 oz of banana concentrate will make 1 gallon of banana syrup just the same as 1 oz of orange concentrate will make 1 gallon of orange syrup. That might not necessarily be the case with Lorann. If you're looking for an easy mix concentrate, then Rio is probably the route you want to go. Since nothing I can find lists their concentrates' ingredients, I would guess that these are all artificial flavors or N&A at best.