I've got both a JG and an Echo 1 and I can't say there's an appreciable difference in build quality between the two, and my guess is Echo 1's "30-day limited" warranty has more loopholes in it than a Federal tax bill.
So, I'd say save a bit of money and get the JG, but I agree with RedRover, don't get it from Evike. It's annoying how they won't let you combine their discount coupons with free shipping, and their customer service is horrible. They will hose you.