I'm still leaning toward the DD light rail lll but it's like $395
The Troy SDMR is $100 less but then later to add rail sections the cost adds up fast. I've never used key mod so is it better to just spend the money and get all the rail or get a key mod and add later. I'm guessing when it's all said and done the two will cost about the same and weigh about the same.

If you had to pick between these or a 15in aluminum rail what would y'all pick?