The Surgen actions are great , very well built with a great desgine , bill for bill if the money wasen't an option I'd go with the Surgen. you will have to throw $400-$500 at a remington to get it close to what the Surgen is plus the $350 for th action and you will still have a Remington action. The Remington will handel the Lapua case but I would only use the Chromoly action and not the Stainless as the stainless is not as strong , the Surgen desgine their is no problem as its a bit bigger in critical areas to handel this fat round.
All of that said the Lawton and Stiller actions are also very well built and make an action to handel the 338 Lapua case and cost less.
But if money were not an option I'd get the Surgen