I have been wanting to build a Ferrari 250 GTO for years. I finally latched onto a Fujimi kit and I think it was a good choice. I got mine from a guy that was selling most of his kits and I got some extras with it. There was a MFH detail set that is way too many tiny parts, a set of improved tires from HRM and an HRM GTO V-12 engine kit.
So far I have looked it over and decided to use some of the photo etched parts, the HRM engine and tires and I bought some KA Models wire wheels. I do believe the kit would build up just fine without all the extras, but since I have them I may as well use them.
I think if I was going to add one item, it would be the PE wire wheels. They just look so good. They are not hard to put together at all, there was a good post on PE wires here on the forum that explained it pretty well. The wheels add a lot to the look of the car sitting on the shelf.
I have not seen the Revell kit but I am more than content with the Fujimi and would prefer not to have opening doors anyway.