If it were only a trade off between money vs travel, then it's down to whether you want/can travel 100% of the time. Personally, I don't want to be on the road all the time but would love traveling a bit.

But I suspect this is not the only trade-off you need to be thinking about. Which one brings you more career development or puts on the path you want to be on? Which company has people you would enjoy working with more? Which one has a better culture?

Even on the money front, would working for the product dev firm be a short term lost revenue but in 1-2 years you would be earning a lot more?