Fallout

Hey, so I've been meaning to get into the Fallout series for some time but haven't been sure where to start. I'm a big fan of games like the Borderlands series and am wondering if there is some overlap in appeal between the 2 franchises if anyone's a fan of both. I know that Fallout is definitely more RPG-y.

I have Fallout 1, 2, 3 and New Vegas from Epic and sales. I've heard a lot about New Vegas and I've heard that the first 2 are very dated but I'm not opposed to dated visuals if the game itself is still relatively playable. Chronological or is there a recommended game? Thanks.