As someone who has had both, I would say don't worry about it. Get which ever one you can get cheaper and\or easier. For a Semi-Auto, the SOCOM barrel has no noticeable advantage.
Normally I'm all for light weight but I came across a deal from one of our dealers here who was selling some brand new Colt 14.5 SOCOM barrels at a price I couldn't resist. Cheap enough that I figured I would send it to ADCO and have it turned down and still save some money. Luckily the dealer talked me into just trying it first and I'm glad I did. The difference in weight is hardly noticeable. That's why I say get which ever one you can find cheaper or easier because you are unlikely to notice much, if any difference.
Now assuming you can find them both for the same price, I would go with the lighter profile just because lighter is lighter and lighter is better IMO