Samparfitt, you won't be disappointed with your purchase. It took just one purchase of a 3rd Rail model to start a snowball effect where I became a collector of them. Oddly, I haven't gone down the GN path yet but should soon, especially being a MN resident with relatives that had worked for the GN railroad.
I really gained an appreciation for this model when I was invited to run with a great group of guys at Trainfest 2 years ago. I snapped this photo of a beautifully weathered model that belongs to gnnpnut here on the forum. I find myself sharing it often to people outside our hobby that think trains are just toys. Every single response is literally the same. "WOW"!!!
Jerry, I hope you don't mind me sharing it. It's an amazing model and the photo brings back some fond memories of a time a was truly grateful to be a part of.
Nick