I care a LOT more about the barrel quality and design, than the finish matching. Hell, I have factory rifles that my finish doesnt "match" on.
It's a tool, not a safe queen.
I would go with the barrel or kit manufacturer, that gives you what you want, with a good solid reputation, for the lowest cost.
I am fond of 4150 chrome lined barrels, so I like Colt and Bushmaster barrels. Of course, I typically build my own... mating to a CMT upper, CMT B/C/CH, etc.
That being said - RRA does make a good barrel (4140)... so I doubt you would be disappointed at all. Their quality is very good.
Model 1 is low cost.... but a little more of a lower tier provider. A lot of bad stuff gets out of their place, but they are pretty good about taking care of it. Thousands of users here have their stuff and are very happy with it.
Just remember this, if you shoot at ALL, in the first month, you will shoot more money in AMMO than the difference you saved from brand x to brand y. So get the best equipment you can, from reputable suppliers, in the exact configuration you want.