50+ you hit the nail right there, my kit built planes are built with the idea that they are to last and puting the extra time in to make sure everything is well built . I also have several ARF's and enjoy them as well without a doubt I fly the arfs alot looser than my kit planes . as to why I build it brings me back to when I was a kid building my first models trying to get them just right , but not having the skills yet , for me its about perfecting those skills and when you unvale your project and your club members or friends say wow! even knowing you can always do better on the next one each project is a learning expierence to improve upon.